code: public WexDepthWrapper getBTCEDepth(String pairs, int size) throws IOException {
  
      if (size < 1) {
        size = 1;
      }
  
      if (size > FULL_SIZE) {
        size = FULL_SIZE;
      }
  
      return btce.getDepth(pairs.toLowerCase(), size, 1);
    }
docs: Get market depth from exchange
  
  @param pairs Dash-delimited string of currency pairs to retrieve (e.g. "btc_usd-ltc_btc")
  @param size Integer value from 1 to 2000 -> get corresponding number of items
  @return WexDepthWrapper object
  @throws IOException