+=head2 C<filter>
+
+ my $filtered_report = $tvc->filter($session, $report);
+
+The C<$session> calls this method after receiving a report from the tool and before forwarding it to the action.
+You can either return a mangled C<$report> (which does not need to be a clone of the original) or C<undef> if you want the action to ignore it completely.
+
+Defaults to the identity function.
+
+=cut
+
+sub filter { $_[2] }
+