docs: public List<String> getStringEnclosedIn(String srcStr, String startToken, String endToken) {
          List<StrPosition> resultList = getStringEnclosedInWithDetails(srcStr, startToken, endToken);
          List<String> retList = new ArrayList<String>();
          for (StrPosition sp : resultList) {
              retList.add(sp.str);
          }
          return retList;
      }