private void handleGET() {
      if (parts.size() == 1) {
        resp.add("solrConfig", req.getCore().getSolrConfig().toMap());
      } else {
        if (ConfigOverlay.NAME.equals(parts.get(1))) {
          resp.add(ConfigOverlay.NAME, req.getCore().getSolrConfig().getOverlay().toMap());
        } else if (RequestParams.NAME.equals(parts.get(1))) {
          if (parts.size() == 3) {
            RequestParams params = req.getCore().getSolrConfig().getRequestParams();
            MapSolrParams p = params.getParams(parts.get(2));
            Map m = new LinkedHashMap<>();
            m.put(ConfigOverlay.ZNODEVER, params.getZnodeVersion());
            if (p != null) {
              m.put(RequestParams.NAME, ZkNodeProps.makeMap(parts.get(2), p.getMap()));
            }
            resp.add(SolrQueryResponse.NAME, m);
          } else {
            resp.add(
                SolrQueryResponse.NAME, req.getCore().getSolrConfig().getRequestParams().toMap());
          }

        } else {
          Map<String, Object> m = req.getCore().getSolrConfig().toMap();
          resp.add("solrConfig", ZkNodeProps.makeMap(parts.get(1), m.get(parts.get(1))));
        }
      }
    }
  protected void issueCreateJob(
      Integer numberOfSlices,
      Integer replicationFactor,
      Integer maxShardsPerNode,
      List<String> createNodeList,
      boolean sendCreateNodeList,
      boolean createNodeSetShuffle) {
    Map<String, Object> propMap =
        ZkNodeProps.makeMap(
            Overseer.QUEUE_OPERATION,
            CollectionParams.CollectionAction.CREATE.toLower(),
            ZkStateReader.REPLICATION_FACTOR,
            replicationFactor.toString(),
            "name",
            COLLECTION_NAME,
            "collection.configName",
            CONFIG_NAME,
            OverseerCollectionProcessor.NUM_SLICES,
            numberOfSlices.toString(),
            ZkStateReader.MAX_SHARDS_PER_NODE,
            maxShardsPerNode.toString());
    if (sendCreateNodeList) {
      propMap.put(
          OverseerCollectionProcessor.CREATE_NODE_SET,
          (createNodeList != null) ? StrUtils.join(createNodeList, ',') : null);
      if (OverseerCollectionProcessor.CREATE_NODE_SET_SHUFFLE_DEFAULT != createNodeSetShuffle
          || random().nextBoolean()) {
        propMap.put(OverseerCollectionProcessor.CREATE_NODE_SET_SHUFFLE, createNodeSetShuffle);
      }
    }

    ZkNodeProps props = new ZkNodeProps(propMap);
    QueueEvent qe =
        new QueueEvent("id", ZkStateReader.toJSON(props), null) {
          @Override
          public void setBytes(byte[] bytes) {
            lastProcessMessageResult = SolrResponse.deserialize(bytes);
          }
        };
    queue.add(qe);
  }