<?php
  
  namespace Illuminate\Contracts\Container;
  
  interface ContextualBindingBuilder
  {
      /**
       * Define the abstract target that depends on the context.
       *
       * @param  string  $abstract
       * @return $this
       */
      public function needs($abstract);
  
      /**
       * Define the implementation for the contextual binding.
       *
       * @param  \Closure|string  $implementation
       * @return void
       */
      public function give($implementation);
  }