private FileStore getFileStore(File cacheDir) {
		try {
			return Files.getFileStore(cacheDir.toPath());
		}
		catch (IOException e) {
			Msg.error(this, "Failed to get java FileStore for path " + cacheDir +
				", will be unable to check free/available space.");
			return null;
		}
	}
Returns the MD5 of this cache entry.

@return the MD5 (as a string) of this cache entry
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/FileCache.java