code: public boolean destinationExists(JsDestinationAddress addr) throws SIMPNullParameterException
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(tc, "destinationExists", new Object[] { addr });
  
          // Now look for the destination in the hash table
          boolean exists = destinationExists(addr.getDestinationName(), addr.getBusName());
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(tc, "destinationExists", new Boolean(exists));
  
          return exists;
      }
docs: Method destinationExists
  
  @param addr
  @return boolean
  @throws SIMPNullParameterException
  <p>This method returns true if the named destination is known in the
  destination manager, otherwise it returns false.</p>