@@ -380,7 +380,7 @@  | 
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| 380 | 380 | *  | 
                                                        
| 381 | 381 | * @param string $option Option value from the site.  | 
                                                        
| 382 | 382 | * @param callable $url_function Function retrieving the URL to normalize.  | 
                                                        
| 383 | - * @return mixed|string URL.  | 
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| 383 | + * @return callable URL.  | 
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| 384 | 384 | */  | 
                                                        
| 385 | 385 |  	public static function normalize_www_in_url( $option, $url_function ) { | 
                                                        
| 386 | 386 | $url = wp_parse_url( call_user_func( $url_function ) );  |