def _handle_start_tag(self, attrs):
        """
        Handle opening tag element

        :param attrs: Attributes of the element
        :type attrs: Dict
        """
        try:
            tag_key = attrs['k']
        except KeyError:
            raise ValueError("Tag without name/key.")
        self._curr['tags'][tag_key] = attrs.get('v')
Handle opening tag element

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