KtCallExpression(71,77): 'foo(1)'
  KaApplicableCallCandidate:
    candidate = KaSimpleFunctionCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = KaExplicitReceiverValue:
        expression = a
        isSafeNavigation = false
        type = A<kotlin.String>
      extensionReceiver = null
      signature = KaFunctionSignature:
        receiverType = null
        returnType = kotlin.Unit
        symbol = /A.foo(<dispatch receiver>: A<T>, r: R): kotlin.Unit
        valueParameters = [
          KaVariableSignature:
            name = r
            receiverType = null
            returnType = kotlin.Int
            symbol = r: R
            contextParameters = []
            callableId = null
        ]
        contextParameters = []
        callableId = /A.foo
      typeArgumentsMapping = {
        R -> (kotlin.Int)
      }
      valueArgumentMapping = {
        1 -> (KaVariableSignature:
          name = r
          receiverType = null
          returnType = kotlin.Int
          symbol = r: R
          contextParameters = []
          callableId = null)
      }
    isInBestCandidates = true