Entity type contact_message

contact_message =>

Drupal\Core\Entity\ContentEntityType {#320
  #id: "contact_message"
  #class: "Drupal\contact\Entity\Message"
  #provider: "contact"
  #static_cache: true
  #render_cache: true
  #persistent_cache: true
  #entity_keys: array:6 [
    "bundle" => "contact_form"
    "uuid" => "uuid"
    "langcode" => "langcode"
    "revision" => ""
    "default_langcode" => "default_langcode"
    "revision_translation_affected" => "revision_translation_affected"
  ]
  #originalClass: "Drupal\contact\Entity\Message"
  #handlers: array:4 [
    "access" => "Drupal\contact\ContactMessageAccessControlHandler"
    "storage" => "Drupal\Core\Entity\ContentEntityNullStorage"
    "view_builder" => "Drupal\contact\MessageViewBuilder"
    "form" => array:2 [
      "default" => "Drupal\contact\MessageForm"
      "layout_builder" => "Drupal\layout_builder\Form\OverridesEntityForm"
    ]
  ]
  #admin_permission: "administer contact forms"
  #collection_permission: null
  #permission_granularity: "entity_type"
  #links: array:4 [
    "devel-load" => "/devel/contact_message/{contact_message}"
    "devel-load-with-references" => "/devel/load-with-references/contact_message/{contact_message}"
    "devel-path-alias" => "/devel/path-alias/contact_message/{contact_message}"
    "devel-definition" => "/devel/definition/contact_message"
  ]
  #bundle_entity_type: "contact_form"
  #bundle_of: null
  #bundle_label: Drupal\Core\StringTranslation\TranslatableMarkup {#321
    #string: "Contact form"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: 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 {#322
    #string: "Contact message"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_collection: Drupal\Core\StringTranslation\TranslatableMarkup {#323
    #string: "Contact messages"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_singular: Drupal\Core\StringTranslation\TranslatableMarkup {#324
    #string: "contact message"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_plural: Drupal\Core\StringTranslation\TranslatableMarkup {#325
    #string: "contact messages"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_count: array:3 [
    "singular" => "@count contact message"
    "plural" => "@count contact messages"
    "context" => null
  ]
  #uri_callback: null
  #group: "content"
  #group_label: Drupal\Core\StringTranslation\TranslatableMarkup {#326
    #string: "Content"
    #arguments: []
    #translatedMarkup: null
    #options: array:1 [
      "context" => "Entity type group"
    ]
    #stringTranslation: null
  }
  #field_ui_base_route: "entity.contact_form.edit_form"
  #common_reference_target: false
  #list_cache_contexts: []
  #list_cache_tags: array:1 [
    0 => "contact_message_list"
  ]
  #constraints: array:1 [
    "EntityUntranslatableFields" => null
  ]
  #additional: []
  #_serviceIds: []
  #_entityStorages: []
  #stringTranslation: null
  #revision_metadata_keys: array:1 [
    "revision_default" => "revision_default"
  ]
}