protected static function getBitfield(DOMElement $element, $name)
	{
		$props    = self::getProperties($element);
		$bitfield = self::toBin($props[$name]);

		// For each bit set to 1, test whether there is an XPath condition to it and whether it is
		// fulfilled. If not, turn the bit to 0
		foreach (array_keys(array_filter(str_split($bitfield, 1))) as $bitNumber)
		{
			$conditionName = $name . $bitNumber;
			if (isset($props[$conditionName]) && !self::evaluate($props[$conditionName], $element))
			{
				$bitfield[$bitNumber] = '0';
			}
		}

		return self::toRaw($bitfield);
	}