Commit					T_GIT_REF
Config					T_GIT_REF
Index					T_GIT_REF
Repository				T_GIT_REF
Signature				T_GIT_REF
Tree					T_GIT_REF

OUTPUT
T_GIT_REF
	sv_setref_pv($arg, \"Git::Raw::${type}\", (void *) $var);
T_GIT_INT
	sv_setref_iv($arg, \"Git::Raw::${type}\", $var);

INPUT
T_GIT_REF
	if (sv_isobject($arg) && sv_derived_from($arg, \"Git::Raw::${type}\"))
		$var = INT2PTR($type, SvIV((SV *) SvRV($arg)));
	else
		Perl_croak(aTHX_ \"$var is not of type Git::Raw::${type}\");
T_GIT_INT
	if (sv_isobject($arg) && sv_derived_from($arg, \"Git::Raw::${type}\"))
		$var = SvIV((SV *) SvRV($arg));
	else
		Perl_croak(aTHX_ \"$var is not of type Git::Raw::${type}\");