code: protected void _setMembership(Membership membership, AbstractItem item)
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "_setMembership", new Object[] { membership, item });
  
          item._setMembership(membership);
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "_setMembership");
      }
docs: /*
  Used to call the (package-private) {@link AbstractItem#setMembership()}
  method from inside the implementation package. A sneaky trick.
  
  @param membership
  
  @param item