code: @Deprecated
      public List<ServerDescription> getSecondaries() {
          return getServersByPredicate(new Predicate() {
              public boolean apply(final ServerDescription serverDescription) {
                  return serverDescription.isSecondary();
              }
          });
      }
docs: Get a list of all the secondaries in this cluster
  
  @return a List of ServerDescriptions of all the secondaries this cluster is currently aware of
  @deprecated Replace with a filter on ServerDescription in the caller