Use null safety library.

bramble-api/build.gradle

@@ -7,6 +7,8 @@ apply plugin: 'witness'
 apply from: 'witness.gradle'
 
 dependencies {
+	api 'org.briarproject:null-safety:0.1'
+
 	implementation "com.google.dagger:dagger:$dagger_version"
 	implementation 'com.google.code.findbugs:jsr305:3.0.2'
 	implementation "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"

bramble-api/src/main/java/org/briarproject/bramble/api/Bytes.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.util.StringUtils;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Arrays;
 

bramble-api/src/main/java/org/briarproject/bramble/api/Consumer.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface Consumer<T> {

bramble-api/src/main/java/org/briarproject/bramble/api/Multiset.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Collections;
 import java.util.HashMap;

bramble-api/src/main/java/org/briarproject/bramble/api/Nameable.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface Nameable {

bramble-api/src/main/java/org/briarproject/bramble/api/Pair.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/Predicate.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface Predicate<T> {

bramble-api/src/main/java/org/briarproject/bramble/api/UniqueId.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.ThreadSafe;
 

bramble-api/src/main/java/org/briarproject/bramble/api/WeakSingletonProvider.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.lang.ref.WeakReference;
 

bramble-api/src/main/java/org/briarproject/bramble/api/account/AccountManager.java

@@ -3,7 +3,7 @@ package org.briarproject.bramble.api.account;
 import org.briarproject.bramble.api.crypto.DecryptionException;
 import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.identity.IdentityManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupHook.java

@@ -3,9 +3,9 @@ package org.briarproject.bramble.api.cleanup;
 import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Collection;
 

bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupManager.java

@@ -5,9 +5,9 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * The CleanupManager is responsible for tracking the cleanup deadlines of

bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/event/CleanupTimerStartedEvent.java

@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.cleanup.event;
 
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfIncomingMessageHook.java

@@ -8,10 +8,10 @@ import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Metadata;
 import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.InvalidMessageException;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.validation.IncomingMessageHook;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfMessageContext.java

@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.client;
 
 import org.briarproject.bramble.api.data.BdfDictionary;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Collection;
 import java.util.Collections;

bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfMessageValidator.java

@@ -4,13 +4,13 @@ import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.data.BdfList;
 import org.briarproject.bramble.api.data.MetadataEncoder;
 import org.briarproject.bramble.api.db.Metadata;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.Group;
 import org.briarproject.bramble.api.sync.InvalidMessageException;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageContext;
 import org.briarproject.bramble.api.sync.validation.MessageValidator;
 import org.briarproject.bramble.api.system.Clock;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.logging.Logger;
 

bramble-api/src/main/java/org/briarproject/bramble/api/client/ClientHelper.java

@@ -11,12 +11,12 @@ import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.mailbox.MailboxUpdate;
 import org.briarproject.bramble.api.mailbox.MailboxVersion;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.properties.TransportProperties;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.security.GeneralSecurityException;
 import java.util.Collection;

bramble-api/src/main/java/org/briarproject/bramble/api/client/ContactGroupFactory.java

@@ -2,9 +2,9 @@ package org.briarproject.bramble.api.client;
 
 import org.briarproject.bramble.api.contact.Contact;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
 import org.briarproject.bramble.api.sync.Group;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface ContactGroupFactory {

bramble-api/src/main/java/org/briarproject/bramble/api/connection/ConnectionManager.java

@@ -2,12 +2,12 @@ package org.briarproject.bramble.api.connection;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.contact.PendingContactId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportConnectionReader;
 import org.briarproject.bramble.api.plugin.TransportConnectionWriter;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
 import org.briarproject.bramble.api.sync.OutgoingSessionRecord;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface ConnectionManager {

bramble-api/src/main/java/org/briarproject/bramble/api/connection/ConnectionRegistry.java

@@ -2,7 +2,6 @@ package org.briarproject.bramble.api.connection;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.contact.PendingContactId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.PluginConfig;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.event.ConnectionClosedEvent;
@@ -12,6 +11,7 @@ import org.briarproject.bramble.api.plugin.event.ContactDisconnectedEvent;
 import org.briarproject.bramble.api.rendezvous.event.RendezvousConnectionClosedEvent;
 import org.briarproject.bramble.api.rendezvous.event.RendezvousConnectionOpenedEvent;
 import org.briarproject.bramble.api.sync.Priority;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Collection;
 

bramble-api/src/main/java/org/briarproject/bramble/api/connection/InterruptibleConnection.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.connection;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * A duplex sync connection that can be closed by interrupting its outgoing

bramble-api/src/main/java/org/briarproject/bramble/api/contact/Contact.java

@@ -3,7 +3,7 @@ package org.briarproject.bramble.api.contact;
 import org.briarproject.bramble.api.crypto.PublicKey;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;

bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactExchangeManager.java

@@ -3,8 +3,8 @@ package org.briarproject.bramble.api.contact;
 import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.ContactExistsException;
 import org.briarproject.bramble.api.db.DbException;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.IOException;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactId.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.contact;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;

bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactManager.java

@@ -12,7 +12,7 @@ import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.AuthorId;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.security.GeneralSecurityException;
 import java.util.Collection;

bramble-api/src/main/java/org/briarproject/bramble/api/contact/HandshakeManager.java

@@ -2,8 +2,8 @@ package org.briarproject.bramble.api.contact;
 
 import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DbException;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.transport.StreamWriter;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.IOException;
 import java.io.InputStream;

bramble-api/src/main/java/org/briarproject/bramble/api/contact/PendingContact.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.contact;
 
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/PendingContactId.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.contact;
 
 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.ThreadSafe;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactAddedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactAliasChangedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactRemovedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactVerifiedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactAddedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;
 
 import org.briarproject.bramble.api.contact.PendingContact;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactRemovedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;
 
 import org.briarproject.bramble.api.contact.PendingContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactStateChangedEvent.java

@@ -3,7 +3,7 @@ package org.briarproject.bramble.api.contact.event;
 import org.briarproject.bramble.api.contact.PendingContactId;
 import org.briarproject.bramble.api.contact.PendingContactState;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/AgreementPrivateKey.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/AgreementPublicKey.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/CryptoComponent.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.security.GeneralSecurityException;
 import java.security.SecureRandom;

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/DecryptionException.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public class DecryptionException extends Exception {

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyPair.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyParser.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.security.GeneralSecurityException;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyStrengthener.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * Interface for strengthening a password-based key, for example by using a

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PasswordStrengthEstimator.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface PasswordStrengthEstimator {

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PrivateKey.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * The private half of a public/private {@link KeyPair}.

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PublicKey.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * The public half of a public/private {@link KeyPair}.

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/SignaturePrivateKey.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/SignaturePublicKey.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypter.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.IOException;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypterFactory.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.transport.StreamContext;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.InputStream;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypter.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.IOException;
 

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypterFactory.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.transport.StreamContext;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.OutputStream;
 

bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfEntry.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Map.Entry;
 

bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfReader.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.IOException;
 

bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfReaderFactory.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.InputStream;
 

bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfStringUtils.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.data;
 
 import org.briarproject.bramble.api.Bytes;
 import org.briarproject.bramble.api.FormatException;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 import java.util.Map;

bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfWriterFactory.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.OutputStream;
 

bramble-api/src/main/java/org/briarproject/bramble/api/data/MetadataEncoder.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.data;
 
 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.db.Metadata;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface MetadataEncoder {

bramble-api/src/main/java/org/briarproject/bramble/api/data/MetadataParser.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.data;
 
 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.db.Metadata;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface MetadataParser {

bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseComponent.java

@@ -10,7 +10,6 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.AuthorId;
 import org.briarproject.bramble.api.identity.Identity;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.settings.Settings;
 import org.briarproject.bramble.api.sync.Ack;
@@ -27,6 +26,7 @@ import org.briarproject.bramble.api.sync.validation.MessageState;
 import org.briarproject.bramble.api.transport.KeySetId;
 import org.briarproject.bramble.api.transport.TransportKeySet;
 import org.briarproject.bramble.api.transport.TransportKeys;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Collection;
 import java.util.List;

bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseConfig.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.db;
 
 import org.briarproject.bramble.api.crypto.KeyStrengthener;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.File;
 

bramble-api/src/main/java/org/briarproject/bramble/api/db/DbCallable.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.db;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface DbCallable<R, E extends Exception> {

bramble-api/src/main/java/org/briarproject/bramble/api/db/DbRunnable.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.db;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface DbRunnable<E extends Exception> {

bramble-api/src/main/java/org/briarproject/bramble/api/db/NullableDbCallable.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.db;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/db/TransactionManager.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.db;
 
 import org.briarproject.bramble.api.event.EventExecutor;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;

bramble-api/src/main/java/org/briarproject/bramble/api/event/EventBus.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.event;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface EventBus {

bramble-api/src/main/java/org/briarproject/bramble/api/event/EventListener.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.event;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * An interface for receiving notifications when events occur.

bramble-api/src/main/java/org/briarproject/bramble/api/identity/Author.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity;
 
 import org.briarproject.bramble.api.Nameable;
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/identity/AuthorFactory.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.identity;
 
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface AuthorFactory {

bramble-api/src/main/java/org/briarproject/bramble/api/identity/AuthorId.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.identity;
 
 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.ThreadSafe;
 

bramble-api/src/main/java/org/briarproject/bramble/api/identity/Identity.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity;
 
 import org.briarproject.bramble.api.crypto.PrivateKey;
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;

bramble-api/src/main/java/org/briarproject/bramble/api/identity/IdentityManager.java

@@ -6,7 +6,7 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface IdentityManager {

bramble-api/src/main/java/org/briarproject/bramble/api/identity/LocalAuthor.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity;
 
 import org.briarproject.bramble.api.crypto.PrivateKey;
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/identity/event/IdentityAddedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity.event;
 
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/identity/event/IdentityRemovedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity.event;
 
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/KeyAgreementConnection.java

@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.keyagreement;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/KeyAgreementTask.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.keyagreement;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 /**
  * A task for conducting a key agreement with a remote peer.

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/Payload.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.keyagreement;
 
 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/PayloadEncoder.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.keyagreement;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface PayloadEncoder {

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/PayloadParser.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.keyagreement;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.io.IOException;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/TransportDescriptor.java

@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.keyagreement;
 
 import org.briarproject.bramble.api.data.BdfList;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/event/KeyAgreementAbortedEvent.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.keyagreement.event;
 
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/event/KeyAgreementFinishedEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.keyagreement.event;
 
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.keyagreement.KeyAgreementResult;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/event/KeyAgreementListeningEvent.java

@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.keyagreement.event;
 
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.keyagreement.Payload;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/lifecycle/LifecycleManager.java

@@ -4,9 +4,9 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.system.Wakeful;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.concurrent.ExecutorService;
 

bramble-api/src/main/java/org/briarproject/bramble/api/lifecycle/ShutdownManager.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.lifecycle;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface ShutdownManager {

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/InvalidMailboxIdException.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public class InvalidMailboxIdException extends Exception {

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxAuthToken.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxFileId.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxFolderId.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxHelper.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 import java.util.TreeSet;

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxId.java

@@ -4,7 +4,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 
 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Locale;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxPairingTask.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.mailbox;
 
 import org.briarproject.bramble.api.Consumer;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 @NotNullByDefault
 public interface MailboxPairingTask extends Runnable {

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxProperties.java

@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.bramble.api.nullsafety.NullSafety;
+import org.briarproject.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NullSafety;
 
 import java.util.List;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxSettingsManager.java

@@ -5,7 +5,7 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxStatus.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxUpdate.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxUpdateManager.java

@@ -3,8 +3,8 @@ package org.briarproject.bramble.api.mailbox;
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxUpdateWithMailbox.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.List;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/MailboxVersion.java

@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.mailbox;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import javax.annotation.concurrent.Immutable;
 

bramble-api/src/main/java/org/briarproject/bramble/api/mailbox/event/MailboxPairedEvent.java

@@ -4,7 +4,7 @@ import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.mailbox.MailboxProperties;
 import org.briarproject.bramble.api.mailbox.MailboxUpdateWithMailbox;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.util.Map;