KtCallExpression(96,101): 'foo()'
  KaInapplicableCallCandidate:
    candidate = KaSimpleFunctionCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = null
      extensionReceiver = null
      signature = KaFunctionSignature:
        receiverType = null
        returnType = kotlin.Unit
        symbol = /foo(): kotlin.Unit
        valueParameters = []
        contextParameters = [
          KaVariableSignature:
            name = string
            receiverType = null
            returnType = kotlin.String
            symbol = string: kotlin.String
            contextParameters = []
            callableId = null
        ]
        callableId = /foo
      typeArgumentsMapping = {}
      valueArgumentMapping = {}
    diagnostic = ERROR<AMBIGUOUS_CONTEXT_ARGUMENT: Multiple potential context arguments for 'string: String' in scope.>
    isInBestCandidates = true