override fun getPossibleCallableNames(): Set<Name> = withValidityAssertion {
        ktFile.declarations.mapNotNullTo(mutableSetOf()) { (it as? KtCallableDeclaration)?.nameAsName }
    }

    override fun getPossibleClassifierNames(): Set<Name> = withValidityAssertion {
        ktFile.declarations.mapNotNullTo(mutableSetOf()) { (it as? KtClassLikeDeclaration)?.nameAsName }
    }