mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? embedImages(
    1. UEmbedRecordWithMediaMediaEmbedImages value
    )?,
  2. TResult? embedVideo(
    1. UEmbedRecordWithMediaMediaEmbedVideo value
    )?,
  3. TResult? embedExternal(
    1. UEmbedRecordWithMediaMediaEmbedExternal value
    )?,
  4. TResult? unknown(
    1. UEmbedRecordWithMediaMediaUnknown 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( UEmbedRecordWithMediaMediaEmbedImages value)?  embedImages,TResult? Function( UEmbedRecordWithMediaMediaEmbedVideo value)?  embedVideo,TResult? Function( UEmbedRecordWithMediaMediaEmbedExternal value)?  embedExternal,TResult? Function( UEmbedRecordWithMediaMediaUnknown value)?  unknown,}){
final _that = this;
switch (_that) {
case UEmbedRecordWithMediaMediaEmbedImages() when embedImages != null:
return embedImages(_that);case UEmbedRecordWithMediaMediaEmbedVideo() when embedVideo != null:
return embedVideo(_that);case UEmbedRecordWithMediaMediaEmbedExternal() when embedExternal != null:
return embedExternal(_that);case UEmbedRecordWithMediaMediaUnknown() when unknown != null:
return unknown(_that);case _:
  return null;

}
}