dangerous_attribute_methods

# File activerecord/lib/active_record/attribute_methods.rb, line 30
      def dangerous_attribute_methods # :nodoc:
        @dangerous_attribute_methods ||= (
          Base.instance_methods +
          Base.private_instance_methods -
          Base.superclass.instance_methods -
          Base.superclass.private_instance_methods +
          %[__id__ dup freeze frozen? hash class clone]
        ).map { |m| -m.to_s }.to_set.freeze
      end