# File lib/couchdb_adapter/attachments.rb, line 106
          def assert_attachments_property
            property = model.properties[:attachments]

            unless property &&
              property.type == DataMapper::Types::JsonObject &&
              property.field == '_attachments'
              raise ArgumentError, "Attachments require   property :attachments, JsonObject, :field => '_attachments'"
            end
          end