original_string: public function channel($channel, $callback, $options = [])
      {
          $this->channels[$channel] = $callback;
  
          $this->channelOptions[$channel] = $options;
  
          return $this;
      }
code: public function channel($channel, $callback, $options = [])
      {
          $this->channels[$channel] = $callback;
  
          $this->channelOptions[$channel] = $options;
  
          return $this;
      }
code_tokens: public function channel ( $ channel , $ callback , $ options = [ ] ) { $ this -> channels [ $ channel ] = $ callback ; $ this -> channelOptions [ $ channel ] = $ options ; return $ this ; }
docstring: Register a channel authenticator.
  
  @param  string  $channel
  @param  callable|string  $callback
  @param  array  $options
  @return $this
docstring_tokens: Register a channel authenticator .