ParameterizedType jvmType =
        (ParameterizedType) new TypeCapture<HashMap<String, int[][]>>() {}.capture();
    ParameterizedType ourType =
        Types.newParameterizedType(HashMap.class, String.class, int[][].class);

    new EqualsTester().addEqualityGroup(jvmType, ourType).testEquals();
    assertEquals(jvmType.toString(), ourType.toString());
    assertEquals(jvmType.hashCode(), ourType.hashCode());