Moving Drupal 8 configuration from another install.

https://drupal.stackexchange.com/questions/108552/views-custom-sorting?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

https://api.drupal.org/api/views/plugins%21views_plugin_query_default.inc/class/views_plugin_query_default/7.x-3.x