KtErrorCallInfo:
  candidateCalls = [
    KtSimpleFunctionCall:
      isImplicitInvoke = false
      partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
        dispatchReceiver = KtExplicitReceiverValue:
          expression = a
          isSafeNavigation = false
          type = A
        extensionReceiver = null
        signature = KtFunctionLikeSignature:
          receiverType = null
          returnType = kotlin.Unit
          symbol = /A.foo(<dispatch receiver>: A): kotlin.Unit
          valueParameters = []
          callableIdIfNonLocal = /A.foo
      typeArgumentsMapping = {}
      argumentMapping = {}
  ]
  diagnostic = ERROR<INVISIBLE_REFERENCE: Cannot access 'fun foo(): Unit': it is private in '/A'>