require(tools.isNotEmpty())
    }

    override val token: KtLifetimeToken get() = analysisSession.token

    override fun getCallableSymbols(nameFilter: KtScopeNameFilter): Sequence<KtCallableSymbol> = withValidityAssertion {
        getTopLevelDeclarations(nameFilter) { it.getTopLevelCallables() }
    }

    override fun getCallableSymbols(names: Collection<Name>): Sequence<KtCallableSymbol> = withValidityAssertion {

        }

        override fun getContributedDescriptors(
            kindFilter: DescriptorKindFilter,
            nameFilter: (Name) -> Boolean
        ): Collection<DeclarationDescriptor> {
            return allMemberScope.getContributedDescriptors(kindFilter, nameFilter).filter {
                it.isDeclaredInOwner() && it.isDelegatedIfRequired()
            }.mapToDelegatedIfRequired()
        }