def _handle_start_area(self, attrs):
        """
        Handle opening area element

        :param attrs: Attributes of the element
        :type attrs: Dict
        """
        self._curr = {
            'attributes': dict(attrs),
            'tags': {},
            'area_id': None
        }
        if attrs.get('id', None) is not None:
            self._curr['area_id'] = int(attrs['id'])
            del self._curr['attributes']['id']
Handle opening area element

        :param attrs: Attributes of the element
        :type attrs: Dict