class_method_defined_within?

# File activerecord/lib/active_record/attribute_methods.rb, line 153
      def class_method_defined_within?(name, klass, superklass = klass.superclass) # :nodoc
        if klass.respond_to?(name, true)
          if superklass.respond_to?(name, true)
            klass.method(name).owner != superklass.method(name).owner
          else
            true
          end
        else
          false
        end
      end