renameSync method Null safety
- String newPath
Synchronously renames this file system entity.
Returns a FileSystemEntity instance for the renamed entity.
newPath identifies an existing entity of the same type,
that entity is removed first.
newPath identifies an existing entity of a different type,
the operation fails and an exception is thrown.
@override T renameSync(String newPath) => wrap(delegate.renameSync(newPath) as D);