public override void Add(IFeature feature)
{
NetworkHelper.AddChannelToHydroNetwork(Network, (IBranch)feature);
// TODO: didn't we just set the nodes and order of this branch, why call OnBranchAdded here?!
branchNodeTopology.Branches = Network.Branches;
branchNodeTopology.Nodes = Network.Nodes;
branchNodeTopology.Layer = Layer;
branchNodeTopology.OnBranchAdded((IBranch)SourceFeature);
}