addOutput method
Registers an output to this Module and returns an output port that can be driven.
The return value is the same as what is returned by output().
Implementation
@protected
Logic addOutput(String name, {int width = 1}) {
_checkForSafePortName(name);
_outputs[name] = Logic(name: name, width: width);
// ignore: invalid_use_of_protected_member
_outputs[name]!.parentModule = this;
return _outputs[name]!;
}