Method makeDataFilenameFor

src/main/java/fieldbox/io/IO.java:767–774

(String defaultSubDirectory, External ex, Box box)

//					   .iterator()
//					   .next() + ".box";
//		}
		return makeFilenameFor(defaultSubDirectory, ".box", "", box);
	}

	private String makeFilenameFor(String defaultSubDirectory, Filespec f, Box box) {
		return makeFilenameFor(defaultSubDirectory, f.getDefaultSuffix(box), safe(f.name), box);
	}

	private String makeFilenameFor(String defaultSubDirectory, String defaultSuffix, String defaultName, Box box) {

		String name = box.properties.get(Box.name);