public static void copyFile(final Path fromFile, final Path toFile) throws IOException {
        Files.copy(fromFile, toFile);
    }
Copy file to file.

@param fromFile the Path to copy (readable, non-null file)
@param toFile   the Path to copy to (non-null, parent dir exists)
stroom-util/src/main/java/stroom/util/io/StreamUtil.java