<?php
 
 namespace Illuminate\Contracts\Routing;
 
 interface BindingRegistrar
 {
     /**
      * Add a new route parameter binder.
      *
      * @param  string  $key
      * @param  string|callable  $binder
      * @return void
      */
     public function bind($key, $binder);
 
     /**
      * Get the binding callback for a given binding.
      *
      * @param  string  $key
      * @return \Closure
      */
     public function getBindingCallback($key);
 }