private void projectItemGenerator_ProjectItemExists(object sender, ProjectItemExistsEventArgs e)
 {
     try
     {
         e.Exists = EnvDTEHelper.Instance.GetProjectItemExists(e.ProjectName, e.ItemName, e.ItemType);
     }
     catch (Exception ex)
     {
         throw;
     }
 }
 protected virtual void OnProjectItemExists(object sender, ProjectItemExistsEventArgs args)
 {
     if (this.ProjectItemExists != null)
     {
         this.ProjectItemExists(sender, args);
     }
 }