public void initialize( UrlRewriteEnvironment environment, UrlRewriteRuleDescriptor descriptor ) throws Exception {
UrlRewriteMatchDescriptor matchDescriptor = new UrlRewriteMatchDescriptorExt();
matchDescriptor.operation( "matches" );
matchDescriptor.flow( descriptor.flow() );
matchDescriptor.template( descriptor.template() );
matchProcessor = new UrlRewriteMatchProcessorExt();
matchProcessor.initialize( environment, matchDescriptor );
}