code: public Page<ChangeRequest> listChangeRequests(Dns.ChangeRequestListOption... options) {
      return dns.listChangeRequests(getName(), options);
    }
docs: Retrieves all change requests for this zone. The method searches for zone by name. Returns a
  page of {@link ChangeRequest}s.
  
  @param options optional restriction on listing and fields to be returned
  @return a page of change requests
  @throws DnsException upon failure or if the zone is not found