/**
* Sets the position of the watermark.
*
* @param mixed $x Can be a position ala CSS, just position X or an array
* containing both params.
* @param int $y Position Y.
* @return Watermark
*/
public function setPosition($x, $y = null)
{
$this->position = Normalize::cssPosition($x, $y);
return $this;
}
