code: public static CompletableFuture<IMessageReceiver> createMessageReceiverFromConnectionStringAsync(String amqpConnectionString, ReceiveMode receiveMode) {
          Utils.assertNonNull("amqpConnectionString", amqpConnectionString);
          return createMessageReceiverFromConnectionStringBuilderAsync(new ConnectionStringBuilder(amqpConnectionString), receiveMode);
      }
docs: Create {@link IMessageReceiver} in default {@link ReceiveMode#PEEKLOCK} mode asynchronously from connection string with <a href="https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-sas">Shared Access Signatures</a>
  
  @param amqpConnectionString the connection string
  @param receiveMode          {@link ReceiveMode} PeekLock or ReceiveAndDelete
  @return a CompletableFuture representing the pending creating