public function off($name)
    {
        if (isset($this->handlers[$name])) {
            unset($this->handlers[$name]);
        }
        return $this;
    }
public function off($name)
    {
        if (isset($this->handlers[$name])) {
            unset($this->handlers[$name]);
        }
        return $this;
    }
public function off ( $ name ) { if ( isset ( $ this -> handlers [ $ name ] ) ) { unset ( $ this -> handlers [ $ name ] ) ; } return $ this ; }
Remove event handlers by specified name

@param string $name The name of event
@return $this
Remove event handlers by specified name