association_scope_cache

# File activerecord/lib/active_record/reflection.rb, line 548
      def association_scope_cache(klass, owner, &block)
        key = self
        if polymorphic?
          key = [key, owner._read_attribute(@foreign_type)]
        end
        klass.with_connection do |connection|
          klass.cached_find_by_statement(connection, key, &block)
        end
      end