@Test
 public void testIsOBZVaultFileReturnsFalseWhenTextFile() throws Exception {
   assertFalse(OBZVaultFile.isOBZVaultFile(_fileText));
 }
 @Test
 public void testIsOBZVaultFileReturnsFalseWhenBadFile() throws Exception {
   assertFalse(OBZVaultFile.isOBZVaultFile(new File("wazongas!")));
 }
 @Test
 public void testIsOBZVaultFileReturnsTrueWhenOBZVaultFile() throws Exception {
   assertTrue(OBZVaultFile.isOBZVaultFile(_fileExisting));
 }