pattern_library-8.x-2.x-dev/pattern_library.services.yml

services:
  plugin.manager.pattern_library:
    class: Drupal\pattern_library\PatternLibraryManager
    arguments: ['@module_handler', '@theme_handler', '@cache.discovery']

  plugin.manager.pattern_modifier_type:
    class: Drupal\pattern_library\PatternModifierTypeManager
    parent: default_plugin_manager