service_metadata

# File activestorage/app/models/active_storage/blob.rb, line 339
    def service_metadata
      if forcibly_serve_as_binary?
        { content_type: ActiveStorage.binary_content_type, disposition: :attachment, filename: filename }
      elsif !allowed_inline?
        { content_type: content_type, disposition: :attachment, filename: filename }
      else
        { content_type: content_type }
      end
    end