public function toArray() {
		if ($this->_array) {
			return $this->_array;
		}
		$root = $this->documentElement;
		if ($root == 'error') {
			return array(
				0 => array(
					'id' => $root->getAttribute('id'),
					'code' => $root->getAttribute('code'),
					'auxCode' => $root->getAttribute('auxCode'),
					'message' => $root->firstChild->nodeValue
				)
			);
		}
		$this->_array = $this->_toArray($root->childNodes);
		return $this->_array;

	}