• lib/current_api_client.rb:

  def current_default_owner

Not used anywhere. current_api_client_authorization.default_owner_uuid is never set and current_user.default_owner_uuid doesn't exist.

• app/models/api_client_authorization.rb:

These _id fields are exposed, despite the fact that they are internal database identifiers that are not meaningful to the client. The owner_uuid field is a virtual field that translates the user_id to a uuid.

    t.add :user_id
    t.add :api_client_id