+=head2 my $bugs = Debbugs::Collection::version->new(%params|$param)
+
+Parameters in addition to those defined by L<Debbugs::Collection>
+
+=over
+
+=item package_collection
+
+Optional L<Debbugs::Collection::Package> which is used to look up packages
+
+=item versions
+
+Optional arrayref of C<package/version/arch> string triples
+
+=back
+
+=cut
+