absolute property Null safety
A FileSystemEntity whose path is the absolute path of path.
The type of the returned instance is the same as the type of this entity.
A file system entity with an already absolute path (as reported by isAbsolute) is returned directly. For a non-absolute path, the returned entity is absolute (isAbsolute) if possible, but still refers to the same file system object.
@override T get absolute => wrap(delegate.absolute as D);