# File lib/dragonfly/active_model_extensions/attachment_class_methods.rb, line 101
        def magic_attributes
          @magic_attributes ||= begin
            prefix = attribute.to_s + '_'
            model_class.public_instance_methods.inject([]) do |attrs, name|
              _, __, suffix  = name.to_s.partition(prefix)
              if !suffix.empty? && allowed_magic_attributes.include?(suffix.to_sym)
                attrs << suffix.to_sym
              end
              attrs
            end
          end
        end