docs: public ChannelWrapper getChannel(String nodeGroup, NodeType nodeType, String identity) {
          List<ChannelWrapper> channelWrappers = getChannels(nodeGroup, nodeType);
          if (channelWrappers != null && channelWrappers.size() != 0) {
              for (ChannelWrapper channelWrapper : channelWrappers) {
                  if (channelWrapper.getIdentity().equals(identity)) {
                      return channelWrapper;
                  }
              }
          }
          return null;
      }