def delete_classification_node(self, project, structure_group, path=None, reclassify_id=None):
        """DeleteClassificationNode.
        Delete an existing classification node.
        :param str project: Project ID or project name
        :param TreeStructureGroup structure_group: Structure group of the classification node, area or iteration.
        :param str path: Path of the classification node.
        :param int reclassify_id: Id of the target classification node for reclassification.
        """
        route_values = {}
        if project is not None:
            route_values['project'] = self._serialize.url('project', project, 'str')
        if structure_group is not None:
            route_values['structureGroup'] = self._serialize.url('structure_group', structure_group, 'TreeStructureGroup')
        if path is not None:
            route_values['path'] = self._serialize.url('path', path, 'str')
        query_parameters = {}
        if reclassify_id is not None:
            query_parameters['$reclassifyId'] = self._serialize.query('reclassify_id', reclassify_id, 'int')
        self._send(http_method='DELETE',
                   location_id='5a172953-1b41-49d3-840a-33f79c3ce89f',
                   version='5.0',
                   route_values=route_values,
                   query_parameters=query_parameters)
DeleteClassificationNode.
        Delete an existing classification node.
        :param str project: Project ID or project name
        :param TreeStructureGroup structure_group: Structure group of the classification node, area or iteration.
        :param str path: Path of the classification node.
        :param int reclassify_id: Id of the target classification node for reclassification.