KtCallExpression(81,87): 'foo(x)'
  KaCallResolutionError:
    candidateCalls = [
      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)
        }
    ]
    diagnostic = ERROR<OTHER_ERROR: CS errors: /foo>