protected override void SwapAssignmentOnSlot(uint slotId)
        {
            // Swap inputLines adn outputLines
            VariableLine variableLine = this.inputLines;

            this.inputLines  = this.outputLines;
            this.outputLines = variableLine;

            // Update variable mapping
            RuntimeStates runtimeStates = graphController.GetRuntimeStates();

            runtimeStates.UpdateVariablesDefinedInNode(this, false);
        }
        private void UpdateInternalData(bool calledFromConstructor)
        {
            if (false != calledFromConstructor)
            {
                string tempVariable = this.graphController.GetRuntimeStates().GenerateTempVariable(uint.MaxValue);
                this.inputLines  = new VariableLine(this.Caption, 0);
                this.outputLines = new VariableLine(tempVariable, 0);
            }
            else
            {
                // Fix: IDE-1899 Rename identifier node displays warning and clears preview value.
                // This method is called at the end of a node-edit operation. For identifier node
                // the user is allowed only to rename the Caption of the node, which can either be
                // in "inputLines" (e.g. "t1 = Var1") or the "outputLines" (e.g. "Var1 = t1"),
                // depending on the connection of the input slot. Here we figure out where the
                // "Caption" resides and update the variable name accordingly.
                //
                bool inputIsTemp  = Utilities.IsTempVariable(inputLines.variable);
                bool outputIsTemp = Utilities.IsTempVariable(outputLines.variable);
                if (!(inputIsTemp ^ outputIsTemp))
                {
                    throw new InvalidOperationException("Either input or output can/must be temp (BBC71AACEE95)!");
                }

                if (false == inputIsTemp) // "inputLines" has the "Caption".
                {
                    inputLines.variable = this.Caption;
                }
                else // "outputLines" has the "Caption".
                {
                    outputLines.variable = this.Caption;
                }

                // Update variable mapping
                RuntimeStates runtimeStates = graphController.GetRuntimeStates();
                runtimeStates.UpdateVariablesDefinedInNode(this, false);
            }
        }