KtSuccessCallInfo:
  call = KtSimpleFunctionCall:
    isImplicitInvoke = false
    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
      dispatchReceiver = null
      extensionReceiver = KtExplicitReceiverValue:
        expression = "str"
        isSafeNavigation = false
        type = kotlin.String
      signature = KtFunctionLikeSignature:
        receiverType = kotlin.String
        returnType = kotlin.Unit
        symbol = /function(<extension receiver>: kotlin.String, a: kotlin.Int): kotlin.Unit
        valueParameters = [
          KtVariableLikeSignature:
            name = a
            receiverType = null
            returnType = kotlin.Int
            symbol = a: kotlin.Int
            callableIdIfNonLocal = null
        ]
        callableIdIfNonLocal = /function
    typeArgumentsMapping = {}
    argumentMapping = {
      1 -> (KtVariableLikeSignature:
        name = a
        receiverType = null
        returnType = kotlin.Int
        symbol = a: kotlin.Int
        callableIdIfNonLocal = null)
    }