docs: def tag_value_setter(tag, attrib):
      """
      Decorator used to declare that the setter function is an attribute of embedded tag
      """
      def outer(func):
          def inner(self, value):
              tag_elem = self.et.find(tag)
  
              if tag_elem is None:
                  et = ElementTree.fromstring("<{}></{}>".format(tag, tag))
                  self.et.append(et)
                  tag_elem = self.et.find(tag)
  
              tag_elem.attrib[attrib] = str(value)
          return inner
      return outer