public function setPreview( $url )
	{
		if ( $url == $this->getPreview() ) { return; }

		$this->_values['preview'] = (string) $url;
		$this->setModified();
	}
public function setPreview( $url )
	{
		if ( $url == $this->getPreview() ) { return; }

		$this->_values['preview'] = (string) $url;
		$this->setModified();
	}
public function setPreview ( $ url ) { if ( $ url == $ this -> getPreview ( ) ) { return ; } $ this -> _values [ 'preview' ] = ( string ) $ url ; $ this -> setModified ( ) ; }
Sets the new preview url of the media item.

@param string $url Preview URL of the media file
Sets the new preview url of the media item .