maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult formData(
    1. Map<String, String>? headers
    )?,
  2. TResult basic(
    1. Map<String, String>? headers
    )?,
  3. TResult data(
    1. Map<String, String>? headers
    )?,
  4. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function( Map<String, String>? headers)?  formData,TResult Function( Map<String, String>? headers)?  basic,TResult Function( Map<String, String>? headers)?  data,required TResult orElse(),}) {final _that = this;
switch (_that) {
case _FormData() when formData != null:
return formData(_that.headers);case _Basic() when basic != null:
return basic(_that.headers);case _Data() when data != null:
return data(_that.headers);case _:
  return orElse();

}
}