disable<T> method Null safety

T disable<T>(
  1. T callback(
      ),
    1. {bool when = true}
    )

    If when is true and this is called within a Chain.capture zone, runs callback in a Zone in which chain capturing is disabled.

    If callback returns a value, it will be returned by disable as well.

    Implementation

    static T disable<T>(T Function() callback, {bool when = true}) {
  var zoneValues =
      when ? {_specKey: null, StackZoneSpecification.disableKey: true} : null;

  return runZoned(callback, zoneValues: zoneValues);
}