code: public List<String> getDatacenters() {
  
          URI uri = createURI("/datacenters");
  
          HTTP.Response httpResponse = HTTP.getResponse(uri.toString());
  
          if (httpResponse.code() == 200) {
              return fromJsonArray(httpResponse.body(), String.class);
          }
          die("Unable to retrieve the datacenters", uri, httpResponse.code(), httpResponse.body());
          return Collections.emptyList();
      }
docs: Retrieves all datacenters.
  <p>
  GET /v1/catalog/datacenters
  
  @return A list of datacenter names.