def limit(num)
      relation = __new_relation__(all.take(num))
      relation.send(:set_from_limit)
      relation
    end
def limit(num)
      relation = __new_relation__(all.take(num))
      relation.send(:set_from_limit)
      relation
    end
Specifies a limit for the number of records to retrieve.

   User.limit(10)