+T_OPUS_PICTURE_TAG
+ if (SvROK($arg) && sv_derived_from($arg, \"Audio::Opusfile::PictureTag\")) {
+ IV tmp = SvIV((SV*)SvRV($arg));
+ $var = INT2PTR($type,tmp);
+ }
+ else
+ Perl_croak_nocontext(\"%s: %s is not of type %s\",
+ ${$ALIAS?\q[GvNAME(CvGV(cv))]:\qq[\"$pname\"]},
+ \"$var\", \"Audio::Opusfile::Tags\")
+