private val firProvider: FirSymbolProvider get() = rootSession.symbolProvider
    val rootSession: LLFirSession = firResolveSession.useSiteFirSession

    private val symbolsCache = BuilderCache<FirBasedSymbol<*>, KaSymbol>()

    val classifierBuilder = ClassifierSymbolBuilder()
    val functionLikeBuilder = FunctionLikeSymbolBuilder()
    val variableLikeBuilder = VariableLikeSymbolBuilder()