public static boolean isMetadataField(Property property) {
        return known.contains(property.getName());
    }
Knowns about all declared {@link Metadata} fields.
Didn't find this functionality anywhere so it was added for
ImageMetadataExtractor, but it can be generalized.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-image-module/src/main/java/org/apache/tika/parser/image/MetadataFields.java