addError abstract method Null safety

void addError(
  1. Object error,
  2. [StackTrace? stackTrace]

Passes the error to the target consumer as an error event.

This function must not be called when a stream is currently being added using addStream.

This operation is non-blocking. See flush or done for how to get any errors generated by this call.


void addError(error, [StackTrace? stackTrace]);