public String anonymize(final ParseTree tree) {
    return build(tree);
  }
@Test
  public void printStatementsShouldGetAnonymized() {
    Assert.assertEquals("PRINT topic FROM BEGINNING;",
        anon.anonymize("PRINT my_topic FROM BEGINNING;"));
    Assert.assertEquals("PRINT topic INTERVAL '0';",
        anon.anonymize("PRINT my_topic INTERVAL 2;"));
    Assert.assertEquals("PRINT topic LIMIT '0';",
        anon.anonymize("PRINT my_topic LIMIT 3;"));
  }