Entity type migration_group

migration_group =>

Drupal\Core\Config\Entity\ConfigEntityType {#405
  #id: "migration_group"
  #class: "Drupal\migrate_plus\Entity\MigrationGroup"
  #provider: "migrate_plus"
  #static_cache: false
  #render_cache: true
  #persistent_cache: true
  #entity_keys: array:8 [
    "id" => "id"
    "label" => "label"
    "revision" => ""
    "bundle" => ""
    "langcode" => "langcode"
    "default_langcode" => "default_langcode"
    "revision_translation_affected" => "revision_translation_affected"
    "uuid" => "uuid"
  ]
  #originalClass: "Drupal\migrate_plus\Entity\MigrationGroup"
  #handlers: array:2 [
    "access" => "Drupal\Core\Entity\EntityAccessControlHandler"
    "storage" => "Drupal\Core\Config\Entity\ConfigEntityStorage"
  ]
  #admin_permission: null
  #collection_permission: null
  #permission_granularity: "entity_type"
  #links: array:4 [
    "devel-load" => "/devel/migration_group/{migration_group}"
    "devel-load-with-references" => "/devel/load-with-references/migration_group/{migration_group}"
    "devel-path-alias" => "/devel/path-alias/migration_group/{migration_group}"
    "devel-definition" => "/devel/definition/migration_group"
  ]
  #bundle_entity_type: null
  #bundle_of: null
  #bundle_label: null
  #base_table: null
  #revision_data_table: null
  #revision_table: null
  #data_table: null
  #internal: false
  #translatable: false
  #show_revision_ui: false
  #label: Drupal\Core\StringTranslation\TranslatableMarkup {#406
    #string: "Migration Group"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_collection: ""
  #label_singular: ""
  #label_plural: ""
  #label_count: []
  #uri_callback: null
  #group: "configuration"
  #group_label: Drupal\Core\StringTranslation\TranslatableMarkup {#407
    #string: "Configuration"
    #arguments: []
    #translatedMarkup: null
    #options: array:1 [
      "context" => "Entity type group"
    ]
    #stringTranslation: null
  }
  #field_ui_base_route: null
  #common_reference_target: false
  #list_cache_contexts: []
  #list_cache_tags: array:1 [
    0 => "config:migration_group_list"
  ]
  #constraints: []
  #additional: array:1 [
    "module" => "migrate_plus"
  ]
  #_serviceIds: []
  #_entityStorages: []
  #stringTranslation: null
  #config_prefix: null
  #lookup_keys: array:1 [
    0 => "uuid"
  ]
  #config_export: array:6 [
    0 => "id"
    1 => "label"
    2 => "description"
    3 => "source_type"
    4 => "module"
    5 => "shared_configuration"
  ]
  #mergedConfigExport: []
}