Tells you whether or not a specific feature is enabled. For names
of features, see C<OPTIONAL_MODULES> in C<Bugzilla::Install::Requirements>.
+=item C<clear_request_cache>
+
+Removes all entries from the C<request_cache>.
+
=back
=head1 B<Methods in need of POD>
use constant SUB_WHITELIST => (
'Bugzilla::Flag' => qr/^(?:(force_)?retarget|force_cleanup)$/,
'Bugzilla::FlagType' => qr/^sqlify_criteria$/,
+ 'Bugzilla::JobQueue' => qr/^work_once$/,
);
# These modules do not need to be documented, generally because they