KtCallExpression(81,87): 'foo(x)'
  KaApplicableCallCandidate:
    candidate = KaSimpleFunctionCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = null
      extensionReceiver = null
      signature = KaFunctionSignature:
        receiverType = null
        returnType = ERROR CLASS: Symbol not found for Unresolved
        symbol = /foo(x: kotlin.Int): ERROR CLASS: Symbol not found for Unresolved
        valueParameters = [
          KaVariableSignature:
            name = x
            receiverType = null
            returnType = kotlin.Int
            symbol = x: kotlin.Int
            contextParameters = []
            callableId = null
        ]
        contextParameters = []
        callableId = /foo
      typeArgumentsMapping = {
        T -> (ERROR CLASS: Cannot infer argument for type parameter T)
      }
      valueArgumentMapping = {
        x -> (KaVariableSignature:
          name = x
          receiverType = null
          returnType = kotlin.Int
          symbol = x: kotlin.Int
          contextParameters = []
          callableId = null)
      }
    isInBestCandidates = true