code: public EndpointManager<TcpIpConnection> getEndpointManager(EndpointQualifier qualifier) {
          EndpointManager<TcpIpConnection> mgr = endpointManagers.get(qualifier);
          if (mgr == null) {
              logger.finest("An endpoint manager for qualifier " + qualifier + " was never registered.");
          }
  
          return mgr;
      }
docs: Returns the respective endpoint manager based on the qualifier.
  Under unified endpoint environments, this will return the respective view of the {@link TcpIpUnifiedEndpointManager}
  eg. {@link MemberViewUnifiedEndpointManager} or {@link ClientViewUnifiedEndpointManager} which report connections based
  on the qualifier, but they register/create connection directly on the Unified manager.
  
  @param qualifier
  @return