Google is committed to advancing racial equity for Black communities. See how.

getCallback method

Function getCallback (int txid)

Returns the callback associated with the given response message.

Used by subclasses of Proxy<T> to retrieve registered callbacks when handling response messages.


Function? getCallback(int txid) {
  final Function? result = _callbackMap.remove(txid);
  if (result == null) {
    proxyError('Message had unknown request id: $txid');
    return null;
  return result;