code: @Override
  	public ChargeInfo getChargeInfo(String CorpNum, int ItemCode) throws PopbillException{
  		return httpget("/Statement/ChargeInfo/" + Integer.toString(ItemCode), CorpNum, null, ChargeInfo.class);
  	}
docs: /*
  (non-Javadoc)
  @see com.popbill.api.StatementService#getChargeInfo(java.lang.String, int)