do_action_ref_array( 'pre_get_posts', WP_Query $query )

1900		 * like `is_main_query()` test against the global `$wp_query` instance, not the passed one.1901		 *1902		 * @since 2.0.01903		 *1904		 * @param WP_Query $query The WP_Query instance (passed by reference).1905		 */1906		do_action_ref_array( 'pre_get_posts', array( &$this ) );1907 1908		// Locally scoped reference for easy of use.1909		$query_vars = &$this->query_vars;1910 1911		// Fill again in case 'pre_get_posts' unset some vars.1912		$query_vars = $this->fill_query_vars( $query_vars );