public void Add(ReferenceElement psh)
 {
     BaseAdd(psh);
 }
 public int IndexOf(ReferenceElement psh)
 {
     return BaseIndexOf(psh);
 }
 public void Remove(ReferenceElement psh)
 {
     if (BaseIndexOf(psh) >= 0)
         BaseRemove(psh.AssemblyName);
 }