def can_refresh?(other)
      mrrt? && (authority == other.authority) &&
        (user_info == other.user_info) && (client_id == other.client_id)
    end
def can_refresh?(other)
      mrrt? && (authority == other.authority) &&
        (user_info == other.user_info) && (client_id == other.client_id)
    end
Determines if self can be used to refresh other.

 @param CachedTokenResponse other
 @return Boolean