Defines the interface for a Boot classes. Any CMS that wishes to work with Drush should extend BaseBoot. If the CMS has a Drupal-Compatibility layer, then it should extend DrupalBoot.
CacheInterface deprecated
Interface for cache implementations.
Implement this interface when building a Drush sql-sanitize plugin.
Storage for arguments preprocessed during preflight.
Inflection interface for the site alias manager.