Get editors from the model
To get editors from the model, use the GetEditors method of the IModel object.
public void GetEditors(ICommandContext c, ICommandParams p)
{
    IModel model = c.App.Workspace.CurrentModel;
    //Get a list of editors
    var editors = model.GetEditors();
    if (editors.Count() == 0)
    {
        c.App.Output.WriteLine("sample", "No editors.");
        return;
    }
    else
    {
        int count = 1;
        foreach (var editor in editors)
        {
            //Output editor information
            c.App.Output.WriteLine("sample", $"{count}th definition name: {editor.ViewDefinitionName}/type: {editor.EditorType}");
            count++;
        }
    }
}