code: public Discriminator getDiscriminator() {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(this, tc, "getDiscriminator should not be called in UDPChannel");
          }
          return null;
      }
docs: /*
  
  see com.ibm.wsspi.channelfw.InboundChannel#getDiscriminator()