code: public boolean entryExists(UniqueKeyGenerator generator)
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(tc, "entryExists", "GeneratorName="+generator.getName());
  
          boolean retval = false;
  
          if (_generators.containsKey(generator.getName()))
          {
              retval = true;
          }
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(tc, "entryExists", "retrun="+retval);
          return retval;
      }
docs: Test if the generator is known to the persistence layer
  
  @param generator to check for
  @return true if generator exists, false otherwise