Entity type field_storage_config

field_storage_config =>

Drupal\Core\Config\Entity\ConfigEntityType {#347
  #id: "field_storage_config"
  #class: "Drupal\field\Entity\FieldStorageConfig"
  #provider: "field"
  #static_cache: false
  #render_cache: true
  #persistent_cache: true
  #entity_keys: array:8 [
    "id" => "id"
    "label" => "id"
    "revision" => ""
    "bundle" => ""
    "langcode" => "langcode"
    "default_langcode" => "default_langcode"
    "revision_translation_affected" => "revision_translation_affected"
    "uuid" => "uuid"
  ]
  #originalClass: "Drupal\field\Entity\FieldStorageConfig"
  #handlers: array:4 [
    "access" => "Drupal\field\FieldStorageConfigAccessControlHandler"
    "storage" => "Drupal\field\FieldStorageConfigStorage"
    "form" => array:2 [
      "edit" => "Drupal\field_ui\Form\FieldStorageConfigEditForm"
      "default" => "Drupal\field_ui\Form\FieldStorageConfigEditForm"
    ]
    "list_builder" => "Drupal\field_ui\FieldStorageConfigListBuilder"
  ]
  #admin_permission: null
  #collection_permission: null
  #permission_granularity: "entity_type"
  #links: array:5 [
    "collection" => "/admin/reports/fields"
    "devel-load" => "/devel/field_storage_config/{field_storage_config}"
    "devel-load-with-references" => "/devel/load-with-references/field_storage_config/{field_storage_config}"
    "devel-path-alias" => "/devel/path-alias/field_storage_config/{field_storage_config}"
    "devel-definition" => "/devel/definition/field_storage_config"
  ]
  #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 {#348
    #string: "Field storage"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_collection: Drupal\Core\StringTranslation\TranslatableMarkup {#349
    #string: "Field storages"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_singular: Drupal\Core\StringTranslation\TranslatableMarkup {#350
    #string: "field storage"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_plural: Drupal\Core\StringTranslation\TranslatableMarkup {#351
    #string: "field storages"
    #arguments: []
    #translatedMarkup: null
    #options: []
    #stringTranslation: null
  }
  #label_count: array:3 [
    "singular" => "@count field storage"
    "plural" => "@count field storages"
    "context" => null
  ]
  #uri_callback: null
  #group: "configuration"
  #group_label: Drupal\Core\StringTranslation\TranslatableMarkup {#352
    #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:field_storage_config_list"
  ]
  #constraints: array:1 [
    "ImmutableProperties" => array:4 [
      0 => "id"
      1 => "entity_type"
      2 => "field_name"
      3 => "type"
    ]
  ]
  #additional: []
  #_serviceIds: []
  #_entityStorages: []
  #stringTranslation: null
  #config_prefix: "storage"
  #lookup_keys: array:1 [
    0 => "uuid"
  ]
  #config_export: array:12 [
    0 => "id"
    1 => "field_name"
    2 => "entity_type"
    3 => "type"
    4 => "settings"
    5 => "module"
    6 => "locked"
    7 => "cardinality"
    8 => "translatable"
    9 => "indexes"
    10 => "persist_with_no_fields"
    11 => "custom_storage"
  ]
  #mergedConfigExport: []
}