checkUnsupportedAction method
      
void
checkUnsupportedAction()
      
     
    
    
Implementation
void checkUnsupportedAction() {
  if (channelType == ChannelType.feed) {
    throw NotSupportedException();
  }
}
void checkUnsupportedAction() {
  if (channelType == ChannelType.feed) {
    throw NotSupportedException();
  }
}