public function get($command) {
        return isset($this->_commands[$command]) ?
            $this->_commands[$command] :
            null;
    }
public function get($command) {
        return isset($this->_commands[$command]) ?
            $this->_commands[$command] :
            null;
    }
public function get ( $ command ) { return isset ( $ this -> _commands [ $ command ] ) ? $ this -> _commands [ $ command ] : null ; }
Get command callback

@access  public
@param   string  $command
@return  mixed
Get command callback