/// <summary>
/// Copy constructor
/// </summary>
/// <param name="viewModel">The viewmodel to copy.</param>
public DiagramViewModel(DiagramViewModel viewModel)
{
Id = viewModel.Id;
Name = viewModel.Name;
Characters.AddRange(viewModel.Characters);
Storylines.AddRange(viewModel.Storylines);
PlotElements.AddRange(viewModel.PlotElements);
Relationships.AddRange(viewModel.Relationships);
StorylineCharacterConnections.AddRange(viewModel.StorylineCharacterConnections);
StorylinePlotElementConnections.AddRange(viewModel.StorylinePlotElementConnections);
CharacterPlotElementConnections.AddRange(viewModel.CharacterPlotElementConnections);
}
