GetQueries.
        [Preview API] Gets the root queries and their children
        :param str project: Project ID or project name
        :param str expand: Include the query string (wiql), clauses, query result columns, and sort options in the results.
        :param int depth: In the folder of queries, return child queries and folders to this depth.
        :param bool include_deleted: Include deleted queries and folders
        :rtype: [QueryHierarchyItem]

def get_queries(self, project, expand=None, depth=None, include_deleted=None):
        """GetQueries.
        [Preview API] Gets the root queries and their children
        :param str project: Project ID or project name
        :param str expand: Include the query string (wiql), clauses, query result columns, and sort options in the results.
        :param int depth: In the folder of queries, return child queries and folders to this depth.
        :param bool include_deleted: Include deleted queries and folders
        :rtype: [QueryHierarchyItem]
        """
        route_values = {}
        if project is not None:
            route_values['project'] = self._serialize.url('project', project, 'str')
        query_parameters = {}
        if expand is not None:
            query_parameters['$expand'] = self._serialize.query('expand', expand, 'str')
        if depth is not None:
            query_parameters['$depth'] = self._serialize.query('depth', depth, 'int')
        if include_deleted is not None:
            query_parameters['$includeDeleted'] = self._serialize.query('include_deleted', include_deleted, 'bool')
        response = self._send(http_method='GET',
                              location_id='a67d190c-c41f-424b-814d-0e906f659301',
                              version='5.1-preview.2',
                              route_values=route_values,
                              query_parameters=query_parameters)
        return self._deserialize('[QueryHierarchyItem]', self._unwrap_collection(response))