addReceiveApplyJoinGroupApprovalListener method Null safety

dynamic addReceiveApplyJoinGroupApprovalListener(
  1. JMReceiveApplyJoinGroupApprovalListener callback
)

Implementation

addReceiveApplyJoinGroupApprovalListener(
    JMReceiveApplyJoinGroupApprovalListener callback) {
  _eventHanders.receiveApplyJoinGroupApproval.add(callback);
}