func (c *Client) Query(dataset, project, queryStr string) ([][]interface{}, []string, error) {
	return c.pagedQuery(defaultPageSize, dataset, project, queryStr, nil)
}
func (c *Client) Query(dataset, project, queryStr string) ([][]interface{}, []string, error) {
	return c.pagedQuery(defaultPageSize, dataset, project, queryStr, nil)
}
// Query loads the data for the query paging if necessary and return the data rows, headers and error