addError method
Adds error to the controller's stream.
As StreamController.addError, but must not be called while an event is being added by add, addError or close.
Implementation
void addError(Object error, [StackTrace stackTrace]);Adds error to the controller's stream.
As StreamController.addError, but must not be called while an event is being added by add, addError or close.
void addError(Object error, [StackTrace stackTrace]);