@deftypefun {const char *} {gnutls_supplemental_get_name} (gnutls_supplemental_data_format_type_t @var{type})
@var{type}: is a supplemental data format type
Convert a @code{gnutls_supplemental_data_format_type_t} value to a
string.
@strong{Returns:} a string that contains the name of the specified
supplemental data format type, or @code{NULL} for unknown types.
@end deftypefun