removeControl method Null safety

void removeControl(
  1. String name,
  2. {bool updateParent = true,
  3. bool emitEvent = true}
)

Remove a control from this group given the name of the control.

When updateParent is true or not supplied (the default) each change affects this control and its parent, otherwise only affects to this control.

When emitEvent is true or not supplied (the default), both the statusChanges and valueChanges emit events with the latest status and value when the control is reset. When false, no events are emitted.

Implementation

void removeControl(String name,
    {bool updateParent = true, bool emitEvent = true}) {
  if (!_controls.containsKey(name)) {
    throw FormControlNotFoundException(controlName: name);
  }

  _controls.removeWhere((key, value) => key == name);
  updateValueAndValidity(updateParent: updateParent, emitEvent: emitEvent);
}