EntityCompatibility::backRawField

static function backRawField($entityName, array $fields, $separator = '=')
{
	if (!static::checkEntityName($entityName))
	{
		throw new ArgumentOutOfRangeException('entityName');
	}

	if (empty($fields))
		return array();

	foreach($fields as $name => $value)
	{
		$fields[$separator.$name] = $value;
		unset($fields[$name]);
	}

	return $fields;
}