mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? labelerView(
    1. ULabelerGetServicesViewsLabelerView value
    )?,
  2. TResult? labelerViewDetailed(
    1. ULabelerGetServicesViewsLabelerViewDetailed value
    )?,
  3. TResult? unknown(
    1. ULabelerGetServicesViewsUnknown value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult? mapOrNull<TResult extends Object?>({TResult? Function( ULabelerGetServicesViewsLabelerView value)?  labelerView,TResult? Function( ULabelerGetServicesViewsLabelerViewDetailed value)?  labelerViewDetailed,TResult? Function( ULabelerGetServicesViewsUnknown value)?  unknown,}){
final _that = this;
switch (_that) {
case ULabelerGetServicesViewsLabelerView() when labelerView != null:
return labelerView(_that);case ULabelerGetServicesViewsLabelerViewDetailed() when labelerViewDetailed != null:
return labelerViewDetailed(_that);case ULabelerGetServicesViewsUnknown() when unknown != null:
return unknown(_that);case _:
  return null;

}
}