whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String url,
    2. PatternType pattern,
    3. ActionType action,
    4. ReasonType reason,
    5. String? comment,
    6. String? createdBy,
    7. Map<String, dynamic>? $unknown,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String url, @PatternTypeConverter()  PatternType pattern, @ActionTypeConverter()  ActionType action, @ReasonTypeConverter()  ReasonType reason,  String? comment,  String? createdBy,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _SafelinkAddRuleInput() when $default != null:
return $default(_that.url,_that.pattern,_that.action,_that.reason,_that.comment,_that.createdBy,_that.$unknown);case _:
  return null;

}
}