name::convertTo

static function convertTo(FieldType $fieldType, $value, $toTypeClass)
{
	/** @var Base $toTypeClass */
	$type = $toTypeClass::getType();
	switch ($type)
	{
		case FieldType::FILE:
			$value = (int) $value;
			break;
		default:
			$value = null;
	}

	return $value;
}