source: class ZipArchiveTest {
  
      @Test
      public void addDuplicate() throws Exception {
  
target:         ZipArchive archive = new ZipArchive(new File("target/test.zip"));
          archive.addToArchive(new File("src/test/resources/vdb-file.txt"), "vdb-file.txt");
          archive.addToArchive(new File("src/test/resources/vdb-file.txt"), "vdb-file.txt");
      }
  
  }