private static void ProcessParameter(IGraphBuilder builder, object parameterNode, object handlerInstance)
{
var subNodes = builder.GetSuccessors(parameterNode);
Debug.Assert(subNodes != null && subNodes.Count() == 2);
var nameNode = subNodes.First();
Debug.Assert(builder.IsNode(nameNode));
var nameValue = builder.GetSuccessors(nameNode).First().ToString();
var payloadNode = subNodes.Last();
var payloadValueNodes = builder.GetSuccessors(payloadNode);
string payloadValue = null;
if (payloadValueNodes.Count() == 1)
{
payloadValue = payloadValueNodes.First().ToString();
Debug.Assert(builder.IsNode(payloadNode));
}
InvokeHandler(nameValue, payloadValue, handlerInstance);
}