What x0 might look like

x0_taste.php

<?php

/**
 * @name facade:resolve
 * @desc Show underlying classes and the corresponding IoC bindings
 * @sign {query:optional:"The query string":"*"}
 */
class SomeCommand {
    
    public function go($input, $output)
    {
        $output("The query string is ".$input("query"));        
    }
    
}