my $type = $class->type();
my $pdata = $class->private();
+ die "duplicate plugin registration (type = $type)"
+ if defined($pdata->{plugins}->{$type});
+
my $plugindata = $class->plugindata();
$pdata->{plugindata}->{$type} = $plugindata;
$pdata->{plugins}->{$type} = $class;