Entity type date_format

date_format =>

Drupal\Core\Config\Entity\ConfigEntityType {#568
  #id: "date_format"
  #class: "Drupal\Core\Datetime\Entity\DateFormat"
  #provider: "core"
  #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\Core\Datetime\Entity\DateFormat"
  #handlers: array:4 [
    "access" => "Drupal\system\DateFormatAccessControlHandler"
    "storage" => "Drupal\Core\Config\Entity\ConfigEntityStorage"
    "form" => array:3 [
      "add" => "Drupal\system\Form\DateFormatAddForm"
      "edit" => "Drupal\system\Form\DateFormatEditForm"
      "delete" => "Drupal\system\Form\DateFormatDeleteForm"
    ]
    "list_builder" => "Drupal\system\DateFormatListBuilder"
  ]
  #admin_permission: "administer site configuration"
  #collection_permission: null
  #permission_granularity: "entity_type"
  #links: array:7 [
    "edit-form" => "/admin/config/regional/date-time/formats/manage/{date_format}"
    "delete-form" => "/admin/config/regional/date-time/formats/manage/{date_format}/delete"
    "collection" => "/admin/config/regional/date-time/formats"
    "devel-load" => "/devel/date_format/{date_format}"
    "devel-load-with-references" => "/devel/load-with-references/date_format/{date_format}"
    "devel-path-alias" => "/devel/path-alias/date_format/{date_format}"
    "devel-definition" => "/devel/definition/date_format/{date_format}"
  ]
  #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 {#569
    #string: "Date format"
    #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 {#570
    #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 => "rendered"
  ]
  #constraints: []
  #additional: []
  #_serviceIds: []
  #_entityStorages: []
  #stringTranslation: null
  #config_prefix: null
  #lookup_keys: array:1 [
    0 => "uuid"
  ]
  #config_export: array:4 [
    0 => "id"
    1 => "label"
    2 => "locked"
    3 => "pattern"
  ]
  #mergedConfigExport: []
}