public function getValueType()
	{
		$xmlType =SchemaTypes::getInstance()->getTypeForDOMNode( $this->domNode );
		// $xmlType = $this->types->getType( $this->domNode->localName, $this->domNode->prefix );
		if ( $xmlType )
		{
			$type = Type::XmlTypeToPHPType( $xmlType );
			if ( $type ) return $type;
		}
		return Type::string;
	}