@Override
 public int hashCode() {
   final int prime = 31;
   int result = 1;
   result = (prime * result) + ((desc == null) ? 0 : desc.hashCode());
   result = (prime * result) + ((fieldOwner == null) ? 0 : fieldOwner.hashCode());
   result = (prime * result) + ((name == null) ? 0 : name.hashCode());
   return result;
 }