GetFolders.
        [Preview API] Gets a list of build definition folders.
        :param str project: Project ID or project name
        :param str path: The path to start with.
        :param str query_order: The order in which folders should be returned.
        :rtype: [Folder]

def get_folders(self, project, path=None, query_order=None):
        """GetFolders.
        [Preview API] Gets a list of build definition folders.
        :param str project: Project ID or project name
        :param str path: The path to start with.
        :param str query_order: The order in which folders should be returned.
        :rtype: [Folder]
        """
        route_values = {}
        if project is not None:
            route_values['project'] = self._serialize.url('project', project, 'str')
        if path is not None:
            route_values['path'] = self._serialize.url('path', path, 'str')
        query_parameters = {}
        if query_order is not None:
            query_parameters['queryOrder'] = self._serialize.query('query_order', query_order, 'str')
        response = self._send(http_method='GET',
                              location_id='a906531b-d2da-4f55-bda7-f3e676cc50d9',
                              version='5.0-preview.2',
                              route_values=route_values,
                              query_parameters=query_parameters)
        return self._deserialize('[Folder]', self._unwrap_collection(response))