Get the lifeline type

To get the lifeline type, use the TypeModel property of the ILifelineShape object.

public void GetLifelineTypes(ICommandContext c, ICommandParams p)
{
    ISequenceDiagram sequenceDiagram = c.App.Workspace.CurrentEditor as ISequenceDiagram;
    if (sequenceDiagram == null) return;

    //Get the lifelines
    var lifelines = sequenceDiagram.Lifelines;

    var no = 1;
    foreach (ILifelineShape lifeline in lifelines)
    {
        //Get the lifeline type
        IModel typeModel = lifeline.TypeModel;
        var typeModelName = typeModel != null ? typeModel.Name : "None";
        c.App.Output.WriteLine("sample", $"{no}th lifeline type : {typeModelName}");
        no++;
    }
}