I have not added caching yet, and adding this simple test passes with the introspection implementation, but fails with the Javassist implementation      *public* Comparable<String> signatureCachedParameterizedClassInfo()    {       *return* *null*;    }       *public* *void* testCachedParameterizedClassInfo() *throws* Throwable    {       Type type = getGenericReturnType("signatureCachedParameterizedClassInfo");       TypeInfo typeInfo1 = getTypeInfoFactory().getTypeInfo(type);       TypeInfo typeInfo2 = getTypeInfoFactory().getTypeInfo(getGenericReturnType("signatureCachedParameterizedClassInfo"));       assertEquals(typeInfo1, typeInfo2);       assertSame(typeInfo1, typeInfo2);  // <-- FAILS       //Also check the results of repeated calls to getGenericSuperClass/-Interfaces() etc.    }   Is this object equality a requirement? My fear is that working out the key will be costly