code: public final String lazyGetQuery(final String pFileName) throws Exception {
      if (this.queries.get(pFileName) == null) {
        String flName = "/" + "accounting" + "/" + "trade"
            + "/" + pFileName + ".sql";
        this.queries.put(pFileName, loadString(flName));
      }
      return this.queries.get(pFileName);
    }
docs: <p>Query loader.</p>
  @param pFileName File Name
  @return String
  @throws Exception - an exception