KtArrayAccessExpression(59,63): '1[2]'
  KaInapplicableCallCandidate:
    candidate = KaSimpleFunctionCall:
      contextArgumentMapping = {}
      contextArguments = []
      dispatchReceiver = null
      extensionReceiver = KaExplicitReceiverValue:
        expression = 1
        isSafeNavigation = false
        type = kotlin.Int
      signature = KaFunctionSignature:
        receiverType = kotlin.Int
        returnType = kotlin.Int
        symbol = /set(<extension receiver>: kotlin.Int, index: kotlin.Int, value: kotlin.Int): kotlin.Int
        valueParameters = [
          KaVariableSignature:
            name = index
            receiverType = null
            returnType = kotlin.Int
            symbol = index: kotlin.Int
            contextParameters = []
            callableId = null,
          KaVariableSignature:
            name = value
            receiverType = null
            returnType = kotlin.Int
            symbol = value: kotlin.Int
            contextParameters = []
            callableId = null
        ]
        contextParameters = []
        callableId = /set
      typeArgumentsMapping = {}
      valueArgumentMapping = {
        2 -> (KaVariableSignature:
          name = index
          receiverType = null
          returnType = kotlin.Int
          symbol = index: kotlin.Int
          contextParameters = []
          callableId = null),
        42 -> (KaVariableSignature:
          name = value
          receiverType = null
          returnType = kotlin.Int
          symbol = value: kotlin.Int
          contextParameters = []
          callableId = null)
      }
    diagnostic = ERROR<OPERATOR_MODIFIER_REQUIRED: 'operator' modifier is required on 'fun Int.set(index: Int, value: Int): Int'.>
    isInBestCandidates = true