when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. List<String>? subjectSelector,
    2. String? probeURL,
    3. XrayDuration? probeInterval,
    4. bool? enableConcurrency,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( List<String>? subjectSelector,  String? probeURL,  XrayDuration? probeInterval,  bool? enableConcurrency)  $default,) {final _that = this;
switch (_that) {
case _ObservatoryConfig():
return $default(_that.subjectSelector,_that.probeURL,_that.probeInterval,_that.enableConcurrency);case _:
  throw StateError('Unexpected subclass');

}
}