public function setNoText($icon = null)
    {
        $this->options['text'] = false;
        if ($icon !== null) {
            $this->setIcon($icon);
        }

        return $this;
    }
public function setNoText($icon = null)
    {
        $this->options['text'] = false;
        if ($icon !== null) {
            $this->setIcon($icon);
        }

        return $this;
    }
public function setNoText ( $ icon = null ) { $ this -> options [ 'text' ] = false ; if ( $ icon !== null ) { $ this -> setIcon ( $ icon ) ; } return $ this ; }
Set button without text and optionally with icon.

@param string $icon Icon CSS class

@return $this
Set button without text and optionally with icon .