define_attribute_methods

# File activerecord/lib/active_record/attribute_methods.rb, line 61
      def define_attribute_methods
        return if generated_methods?
        columns_hash.each do |name, column|
          unless instance_method_already_implemented?(name)
            if self.serialized_attributes[name]
              define_read_method_for_serialized_attribute(name)
            else
              define_read_method(name.to_sym, name, column)
            end
          end

          unless instance_method_already_implemented?("#{name}=")
            define_write_method(name.to_sym)
          end

          unless instance_method_already_implemented?("#{name}?")
            define_question_method(name)
          end
        end
      end