is FirResolvedImport -> getSymbolsByResolvedImport(expression, symbolBuilder, fir, session)
            is FirPackageDirective -> getSymbolsForPackageDirective(expression, symbolBuilder)
            is FirFile -> getSymbolsByFirFile(symbolBuilder, fir)
            is FirArrayLiteral -> {
                // We can't yet find PsiElement for arrayOf, intArrayOf, etc.
                emptyList()
            }

        }

        return null
    }

    private fun getFullyResolvedFirFile(file: KtFile): FirFile {
        val firFile = file.getOrBuildFirFile(firResolveSession)
        firFile.lazyResolveToPhaseRecursively(FirResolvePhase.BODY_RESOLVE)
        return firFile
    }

    private fun computeErrors(
        diagnostics: Collection<DiagnosticMarker>,

        val ktFile = position.containingKtFile
        val firFile = ktFile.getOrBuildFirFile(firResolveSession)

        val fileSession = firFile.llFirSession
        val sessionHolder = SessionHolderImpl(fileSession, fileSession.getScopeSession())

        val context = ContextCollector.process(firFile, sessionHolder, position)

    }

    override fun getImportingScopeContext(file: KtFile): KtScopeContext {
        val firFile = file.getOrBuildFirFile(firResolveSession)
        val firFileSession = firFile.moduleData.session
        val firImportingScopes = createImportingScopes(
            firFile,
            firFileSession,
            analysisSession.getScopeSessionFor(firFileSession),
            useCaching = true,

        val firFile = ktFile.getOrBuildFirFile(firResolveSession)
        val bindings = JvmSerializationBindings().also { collectBindings(firFile.declarations, mapping, it) }
        val (serializer, stringTable) = createTopLevelSerializer(bindings)
        val fileProto = serializer.packagePartProto(firFile, null)

        val usedImports: Map<FqName, Set<Name>>,
        val unresolvedNames: Set<Name>,
    )

    private fun collectReferencedEntities(file: KtFile): ReferencedEntitiesResult {
        val firFile = file.getOrBuildFirFile(firResolveSession).apply { lazyResolveToPhaseRecursively(FirResolvePhase.BODY_RESOLVE) }
        val usedImports = mutableMapOf<FqName, MutableSet<Name>>()
        val unresolvedNames = mutableSetOf<Name>()