maybeWhen<TResult extends Object?>  method 
- @optionalTypeArgs
- TResult repoViewDetail(- RepoViewDetail data
 
- TResult repoViewNotFound(- RepoViewNotFound data
 
- TResult unknown()?,
- 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( RepoViewDetail data)?  repoViewDetail,TResult Function( RepoViewNotFound data)?  repoViewNotFound,TResult Function( Map<String, dynamic> data)?  unknown,required TResult orElse(),}) {final _that = this;
switch (_that) {
case UVerificationViewSubjectRepoRepoViewDetail() when repoViewDetail != null:
return repoViewDetail(_that.data);case UVerificationViewSubjectRepoRepoViewNotFound() when repoViewNotFound != null:
return repoViewNotFound(_that.data);case UVerificationViewSubjectRepoUnknown() when unknown != null:
return unknown(_that.data);case _:
  return orElse();
}
}