return super.getCallableSymbols(nameFilter).filter { it.origin == KtSymbolOrigin.DELEGATED }
    }

    override fun getCallableSymbols(names: Collection<Name>): Sequence<KtCallableSymbol> = withValidityAssertion {
        return super.getCallableSymbols(names).filter { it.origin == KtSymbolOrigin.DELEGATED }
    }