/** * Returns a set of consumers registered by a given owner. * * @param owner Identifier of the owner that registered the consumers to be retrieved. * @return consumers registered by the owner. */ public Set<Consumer> getConsumers(final String owner) { final Set<Consumer> result = new HashSet<>(); for (final Consumer consumer : consumerByConsumerKey.values()) { if (consumer.getOwner().equals(owner)) { result.add(consumer); } } return result; }