<?php
  
  namespace Illuminate\Contracts\Bus;
  
  interface Dispatcher
  {
      /**
       * Dispatch a command to its appropriate handler.
       *
       * @param  mixed  $command
       * @return mixed
       */
      public function dispatch($command);
  
      /**
       * Dispatch a command to its appropriate handler in the current process.
       *
       * @param  mixed  $command
       * @param  mixed  $handler
       * @return mixed
       */
      public function dispatchNow($command, $handler = null);
  
      /**
       * Determine if the given command has a handler.
       *
       * @param  mixed  $command
       * @return bool
       */
      public function hasCommandHandler($command);
  
      /**
       * Retrieve the handler for a command.
       *
       * @param  mixed  $command
       * @return bool|mixed
       */
      public function getCommandHandler($command);
  
      /**
       * Set the pipes commands should be piped through before dispatching.
       *
       * @param  array  $pipes
       * @return $this
       */
      public function pipeThrough(array $pipes);
  
      /**
       * Map a command to a handler.
       *
       * @param  array  $map
       * @return $this
       */
      public function map(array $map);
  }