assertBadUseOfReferentialEquality(SameIntegerInstance.class);
    assertBadUseOfReferentialEquality(SameLongInstance.class);
    assertBadUseOfReferentialEquality(SameFloatInstance.class);
    assertBadUseOfReferentialEquality(SameDoubleInstance.class);
    assertBadUseOfReferentialEquality(SameShortInstance.class);
    assertBadUseOfReferentialEquality(SameByteInstance.class);