code: function clone (o, replacer) {
                      if(typeof o === 'string' || typeof o === 'number') return o;
  
                      try {
                          return JSON.parse(JSON.stringify(o, replacer));
                      }
                      catch (e) {
                          throw new Error('Unable to clone object: ' + e.message);
                      }
                  }
docs: Produces a shallow clone of the object, that is, if JSON.stringify can handle it.<br>
  The object must be non-circular.
  @param {Object} o The object to operate on.
  @param {Function=} replacer The JSON.stringify replacer parameter.
  @return {*} A shallow clone of the object.
  @function