Note: As of April 13, 2016 these commands are included with Drupal console.
This is a Drupal 8 module containing Drupal Console commands useful for developing and debugging plugins.
Only plugin types exposed as services are listed. When creating a custom plugin type, be sure to expose it as a service by adding it to your services.yml with the name "plugin.manager.PLUGIN_TYPE".
Documentation on plugin types: https://www.drupal.org/node/1637730
List all plugin types and the corresponding plugin manager class.
List all plugin instances of the specified type.
Dump the definition for the specific plugin instance.