SaveEntityCommand::registerGeneralFileField

private function registerGeneralFileField(Field $field, int $fileId): void
{
	/** @var FileInputUtility $fileInputUtility */
	$fileInputUtility = FileInputUtility::instance();
	$controlId = mb_strtolower($field->getName()) . '_uploader';

	$fileInputUtility->registerControl($controlId, $controlId);
	$fileInputUtility->registerFile($controlId, $fileId);
}