@deftypefun {int} {gnutls_certificate_get_peers_subkey_id} (gnutls_session_t @var{session}, gnutls_datum_t * @var{id})
@var{session}: is a gnutls session

@var{id}: will contain the ID

This function is no-op.

@strong{Returns:} @code{GNUTLS_E_UNIMPLEMENTED_FEATURE} .

@strong{Since:} 3.1.3
@end deftypefun