code: public ClientConfig setLabels(Set<String> labels) {
          Preconditions.isNotNull(labels, "labels");
          this.labels.clear();
          this.labels.addAll(labels);
          return this;
      }
docs: Set labels for the client. Deletes old labels if added earlier.
  
  @param labels The labels to be set
  @return configured {@link com.hazelcast.client.config.ClientConfig} for chaining