update_metadata

# File activestorage/lib/active_storage/service/gcs_service.rb, line 48
    def update_metadata(key, content_type,, disposition: nil, filename: nil, custom_metadata: {})
      instrument :update_metadata, key: key, content_type: content_type, disposition: disposition do
        file_for(key).update do |file|
          file.content_type = content_type
          file.content_disposition = content_disposition_with(type: disposition, filename: filename) if disposition && filename
          file.metadata = custom_metadata
        end
      end
    end