Base::convertKeysToSnakeCaseSelect

public function convertKeysToSnakeCaseSelect($fields)
{
	$converter = new Converter(Converter::VALUES | Converter::TO_SNAKE | Converter::TO_UPPER| Converter::TO_SNAKE_DIGIT);
	$items = $converter->process($fields);
	return $this->converterValuesProcessOnAfter($items);
}