@Override
	@Nonnull
	public String getResFlagNames(@Nonnull String resName, long mask) {
		Object2LongMap<String> values = attrToFlags.get(resName);
		if (values == null)
			return "";
		return values.object2LongEntrySet().stream()
				.filter(e -> (mask & e.getLongValue()) != 0L)
				.sorted(Comparator.comparingLong(Object2LongMap.Entry::getLongValue))
				.map(Map.Entry::getKey)
				.collect(Collectors.joining("|"));
	}
@param resId
		Resource ID.

@return {@code true} when the resource is a known flag.
recaf-core/src/main/java/software/coley/recaf/util/android/AndroidRes.java