$file = new File('oldname.txt'); $file->setName('newname.txt');
$dir = new Directory('originaldir'); $dir->setName('newdir');In this example, a new `Directory` object is created with the name "originaldir". Then, the `setName` method is used to change the name of the directory to "newdir". Package Library: The package library for this method is likely the PHP core library, as it is a built-in functionality of PHP.