public bool GetReplicationText(uint compId, int index, out string text)
        {
            VisualNode node = GetVisualNode(compId);

            if (node.VisualType != NodeType.Function)
            {
                throw new InvalidOperationException("node must be function Node");
            }
            else
            {
                FunctionNode fNode = node as FunctionNode;
                text = fNode.GetReplicationText(index);
            }
            return(true);
        }