public static String getSHA1Checksum(File file) throws IOException, NoSuchAlgorithmException {
        return getChecksum(SHA1, file);
    }
@Test
    public void testGetSHA1Checksum_File() throws Exception {
        File file = new File(this.getClass().getClassLoader().getResource("checkSumTest.file").toURI().getPath());
        String expResult = "b8a9ff28b21bcb1d0b50e24a5243d8b51766851a";
        String result = Checksum.getSHA1Checksum(file);
        assertEquals(expResult, result);
    }