docs: static SymbolEntity[] getSymbols(JSONObject entities) throws JSONException, TwitterException {
          if (!entities.isNull("symbols")) {
              JSONArray symbolsArray = entities.getJSONArray("symbols");
              int len = symbolsArray.length();
              SymbolEntity[] symbolEntities = new SymbolEntity[len];
              for (int i = 0; i < len; i++) {
                  // HashtagEntityJSONImpl also implements SymbolEntities
                  symbolEntities[i] = new HashtagEntityJSONImpl(symbolsArray.getJSONObject(i));
              }
              return symbolEntities;
          } else {
              return null;
          }
      }