code: public void setBlocked(boolean blocked)
     {
       if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
         SibTr.entry(tc, "setBlocked", new Object[] {Boolean.valueOf(blocked), Boolean.valueOf(_blocked)});
  
       _blocked = blocked;
       
       if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
         SibTr.exit(tc, "setBlocked");
     }
docs: the items