docs: public long getLong(String key) throws JSONException {
          Object object = this.get(key);
          try {
              return object instanceof Number ? ((Number) object).longValue()
                      : Long.parseLong((String) object);
          } catch (Exception e) {
              throw new JSONException("JSONObject[" + quote(key)
                      + "] is not a long.");
          }
      }