code: @Nonnull
      @Override
      public Iterable<LbProtocol> listSupportedProtocols() throws CloudException, InternalException {
          return Collections.unmodifiableList(Arrays.asList(LbProtocol.HTTP, LbProtocol.HTTPS));
      }
docs: Lists the network protocols supported for load balancer listeners.
  
  @return a list of one or more supported network protocols for load balancing
  @throws org.dasein.cloud.CloudException    an error occurred while communicating with the cloud provider
  @throws org.dasein.cloud.InternalException an error occurred within the Dasein Cloud implementation