EntityCompatibility::clearFields

static function clearFields(array $fields, array $availableFields = array())
{
	if (empty($availableFields))
		$availableFields = static::getAvailableFields();

	foreach ($fields as $fieldName => $fieldValue)
	{
		if (!in_array($fieldName, $availableFields))
		{
			unset($fields[$fieldName]);
		}
	}

	return $fields;
}