driver-core/src/main/com/mongodb/connection/ClusterDescription.java
@Deprecated
    public List<ServerDescription> getSecondaries() {
        return getServersByPredicate(new Predicate() {
            public boolean apply(final ServerDescription serverDescription) {
                return serverDescription.isSecondary();
            }
        });
    }
@Deprecated
    public List<ServerDescription> getSecondaries() {
        return getServersByPredicate(new Predicate() {
            public boolean apply(final ServerDescription serverDescription) {
                return serverDescription.isSecondary();
            }
        });
    }
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