dump

# File activerecord/lib/active_record/coders/yaml_column.rb, line 13
      def dump(obj)
        return if obj.nil?

        unless obj.is_a?(object_class)
          raise SerializationTypeMismatch,
            "Attribute was supposed to be a #{object_class}, but was a #{obj.class}. -- #{obj.inspect}"
        end
        YAML.dump obj
      end