public String getFiltersFile() {
    return filtersFile;
  }
@Test
  public void testExclusionsOption() {
    final DistCpOptions.Builder builder = new DistCpOptions.Builder(
        new Path("hdfs://localhost:8020/source/first"),
        new Path("hdfs://localhost:8020/target/"));
    Assert.assertNull(builder.build().getFiltersFile());

    builder.withFiltersFile("/tmp/filters.txt");
    Assert.assertEquals("/tmp/filters.txt", builder.build().getFiltersFile());
  }