code: @ObjectiveCName("sendAudioWithPeer:withName:withDuration:withDescriptor:")
      public void sendAudio(@NotNull Peer peer, @NotNull String fileName,
                            int duration, @NotNull String descriptor) {
          modules.getMessagesModule().sendAudio(peer, fileName, duration, descriptor);
      }
docs: Send Audio message
  
  @param peer       destination peer
  @param duration   audio duration
  @param descriptor File Descriptor