code: protected final CnvTfsDouble
      createPutCnvTfsDouble() throws Exception {
      CnvTfsDouble convrt = new CnvTfsDouble();
      this.convertersMap.put(CnvTfsDouble.class.getSimpleName(), convrt);
      return convrt;
    }
docs: <p>Get CnvTfsDouble (create and put into map).</p>
  @return requested CnvTfsDouble
  @throws Exception - an exception