docs: public boolean removeGetDataEventListener(GetDataEventListener listener) {
          boolean result = ListenerRegistration.removeFromList(listener, peerGetDataEventListeners);
          for (Peer peer : getConnectedPeers())
              peer.removeGetDataEventListener(listener);
          for (Peer peer : getPendingPeers())
              peer.removeGetDataEventListener(listener);
          return result;
      }