): KtCompletionExtensionCandidateChecker = analysisSession.withValidityAssertion {
        return LazyKtCompletionExtensionCandidateChecker {
            // Double validity check is needed, as the checker may be requested some time later
            analysisSession.withValidityAssertion {
                KtFirCompletionExtensionCandidateChecker(analysisSession, nameExpression, explicitReceiver, originalFile)
            }
        }
    }