mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? profileViewBasic(
    1. UModerationSubjectProfileProfileViewBasic value
    )?,
  2. TResult? profileView(
    1. UModerationSubjectProfileProfileView value
    )?,
  3. TResult? profileViewDetailed(
    1. UModerationSubjectProfileProfileViewDetailed 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( UModerationSubjectProfileProfileViewBasic value)?  profileViewBasic,TResult? Function( UModerationSubjectProfileProfileView value)?  profileView,TResult? Function( UModerationSubjectProfileProfileViewDetailed value)?  profileViewDetailed,}){
final _that = this;
switch (_that) {
case UModerationSubjectProfileProfileViewBasic() when profileViewBasic != null:
return profileViewBasic(_that);case UModerationSubjectProfileProfileView() when profileView != null:
return profileView(_that);case UModerationSubjectProfileProfileViewDetailed() when profileViewDetailed != null:
return profileViewDetailed(_that);case _:
  return null;

}
}