Return LiveData when sending message

briar-api/src/main/java/org/briarproject/briar/api/autodelete/UnexpectedTimerException.java

@@ -0,0 +1,12 @@
+package org.briarproject.briar.api.autodelete;
+
+import org.briarproject.bramble.api.db.DbException;
+
+/**
+ * Thrown when a database operation is attempted as part of message storing
+ * and the operation is expecting a different timer state. This
+ * exception may occur due to concurrent updates and does not indicate a
+ * database error.
+ */
+public class UnexpectedTimerException extends DbException {
+}