Utilise TokenManager and ExpiryManager

libsignal/src/main/java/org/session/libsignal/utilities/PromiseUtilities.kt

@@ -3,8 +3,12 @@ package org.session.libsignal.utilities
 
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.deferred
+import nl.komponents.kovenant.task
 import java.util.concurrent.TimeoutException
 
+fun emptyPromise() = EMPTY_PROMISE
+private val EMPTY_PROMISE: Promise<*, java.lang.Exception> = task {}
+
 fun <V, E : Throwable> Promise<V, E>.get(defaultValue: V): V {
     return try {
         get()

libsignal/src/main/java/org/session/libsignal/utilities/Retrying.kt

@@ -28,3 +28,4 @@ fun <V, T : Promise<V, Exception>> retryIfNeeded(maxRetryCount: Int, retryInterv
     retryIfNeeded()
     return deferred.promise
 }
+