@Override
            public MultipartFile parseValue(Object input) throws CoercingParseValueException {
                if (input instanceof MultipartFile) {
                    return (MultipartFile) input;
                } else {
                    throw new CoercingParseValueException(String.format("Expected type '%s' but was '%s'",
                                                                        MultipartFile.class, input.getClass()));
                }
            }
A multipart-file scalar that converts a file path string into a
{@link com.linecorp.armeria.common.multipart.MultipartFile}.
graphql/src/main/java/com/linecorp/armeria/common/graphql/scalar/MultipartFileScalar.java