in graphql-dgs-spring-graphql-example-java/src/main/java/com/netflix/graphql/dgs/example/datafetcher/FileUploadMutation.java [70:75]
public boolean uploadTest(@InputArgument MultipartFile input, DataFetchingEnvironment dfe) {
MultipartFile file = input;
MultipartFile inputTest = (MultipartFile) dfe.getArgument("input");
if (file == null || file.isEmpty()) return false;
return true;
}