Change record status: 
Project: 
Introduced in branch: 
9.1.x
Introduced in version: 
9.1.0
Description: 

A new trait, \Drupal\Core\Plugin\ContextAwarePluginTrait, has been introduced as a replacement for \Drupal\Component\Plugin\ContextAwarePluginBase and \Drupal\Core\Plugin\ContextAwarePluginBase which have been deprecated.

In addition to this change, passing context values to plugins via configuration has been deprecated. Instead, call ::setContextValue() on the plugin itself.

Impacts: 
Module developers