Set<Integer> mt = emptySet();
    assertEmpty(Sets.cartesianProduct(mt, mt));
  }

  public void testCartesianProduct_binary0x1() {
    Set<Integer> mt = emptySet();
    assertEmpty(Sets.cartesianProduct(mt, set(1)));
  }

  public void testCartesianProduct_binary1x0() {
    Set<Integer> mt = emptySet();
    assertEmpty(Sets.cartesianProduct(set(1), mt));
  }

        }
        pb.redirectErrorStream(true);

        Process currentProcess = null;
        MonitorThread mt = null;
        try {
            currentProcess = pb.start();

            // monitoring
            mt = new MonitorThread(currentProcess, executionTimeout);
            mt.start();

    Set<Integer> mt = emptySet();
    assertEmpty(Sets.cartesianProduct(mt, mt));
  }

  public void testCartesianProduct_binary0x1() {
    Set<Integer> mt = emptySet();
    assertEmpty(Sets.cartesianProduct(mt, set(1)));
  }

  public void testCartesianProduct_binary1x0() {
    Set<Integer> mt = emptySet();
    assertEmpty(Sets.cartesianProduct(set(1), mt));
  }

    String QUERY_GSA_DEFAULT_LANG = "query.gsa.default.lang";

    /** The key of the configuration. e.g.  */
    String QUERY_GSA_DEFAULT_SORT = "query.gsa.default.sort";

    /** The key of the configuration. e.g. MT_ */
    String QUERY_GSA_META_PREFIX = "query.gsa.meta.prefix";

    /** The key of the configuration. e.g. charset */
    String QUERY_GSA_INDEX_FIELD_CHARSET = "query.gsa.index.field.charset";

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