Any code or codification of ordinances may be adopted by reference. To adopt a code by reference the Council shall pass to print an ordinance stating the general contents of the code to be adopted, the place or places where said code is available for public inspection and the date, time and place where interested parties may appear before the Council and speak for or against the adoption of the code. The ordinance shall be published in the manner provided for all ordinances. The code need not be published. Following public testimony, the Council may adopt the code, reject it, or adopt the code with modifications. Once adopted, a code may be amended in the same manner as provided for the amendment of an ordinance.