RouteBuilder exclude(Iterable<? extends Route> excludedRoutes) {
        Iterables.addAll(this.excludedRoutes, requireNonNull(excludedRoutes, "excludedRoutes"));
        return this;
    }
Adds {@link Route}s that are supposed to be excluded from the {@link Route} built by this
{@link RouteBuilder}.
core/src/main/java/com/linecorp/armeria/server/RouteBuilder.java