Determining if Lazily fetched Collection is loaded

[Paul Copeland]

Is there a way to tell if a lazily fetched Collection is already loaded 
without accessing the field and forcing it to load?  I want to add a new 
persistent entity to a Collection, but only if the Collection has 
already been fetched - because fetching a large collection may be 
expensive. But once it has been fetched it must be kept it up to date in 
memory.

   @OneToMany(mappedBy="listHolder", fetch=FetchType.LAZY,
              cascade={CascadeType.PERSIST,CascadeType.REMOVE})
   private List<Member> memberList;