docs: public ServerGroup activateServerGroup(int serverGroupId) {
          ServerGroup serverGroup = null;
          BasicNameValuePair[] params = {
              new BasicNameValuePair("activate", String.valueOf(true)),
              new BasicNameValuePair("profileIdentifier", this._profileName)
          };
          try {
              JSONObject response = new JSONObject(doPost(BASE_SERVERGROUP + "/" + serverGroupId, params));
              serverGroup = getServerGroupFromJSON(response);
          } catch (Exception e) {
              e.printStackTrace();
              return null;
          }
          return serverGroup;
      }