KtCallExpression(90,96): 'peek()'
  KaApplicableCallCandidate:
    candidate = KaSimpleFunctionCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = KaExplicitReceiverValue:
        expression = foo()
        isSafeNavigation = false
        type = F
      extensionReceiver = null
      signature = KaFunctionSignature:
        receiverType = null
        returnType = F
        symbol = /F.peek(<dispatch receiver>: F): F
        valueParameters = []
        contextParameters = []
        callableId = /F.peek
      typeArgumentsMapping = {}
      valueArgumentMapping = {}
    isInBestCandidates = true