code: public List<HistoricalSplit> getSplitHistory(Calendar from, Calendar to) throws IOException {
          if(YahooFinance.HISTQUOTES2_ENABLED.equalsIgnoreCase("true")) {
              HistSplitsRequest histSplit = new HistSplitsRequest(this.symbol, from, to);
              this.setSplitHistory(histSplit.getResult());
          } else {
          	// Historical splits cannot be retrieved without CRUMB
          	this.setSplitHistory(null);
          }
          return this.splitHistory;
      }
docs: Requests the historical splits for this stock with the following characteristics.
  <ul>
  <li> from: specified value
  <li> to: specified value
  </ul>
  
  @param from          start date of the historical data
  @param to            end date of the historical data
  @return              a list of historical splits from this stock
  @throws java.io.IOException when there's a connection problem
  @see                 #getSplitHistory()