/// <summary>
 /// constructuro with ElementWrapper
 /// </summary>
 /// <param name="wrappedElement"></param>
 protected WorkItem(WT.Project ownerProject, ElementWrapper wrappedElement) : this(ownerProject)
 {
     this._wrappedElement = wrappedElement;
 }
 /// <summary>
 /// default constructor
 /// </summary>
 protected WorkItem(WT.Project ownerProject)
 {
     this.ownerProject = ownerProject;
 }