code: protected void addGetParam(String paramKey, String paramValue) {
          try {
              params_.put(paramKey, paramValue);
          } catch (JSONException ignore) {
          }
      }
docs: Adds a param and its value to the get request
  
  @param paramKey   A {@link String} value for the get param key
  @param paramValue A {@link String} value for the get param value