RouteBuilder exclude(String pathPattern) {
        requireNonNull(pathPattern, "pathPattern");
        excludedRoutes.add(Route.builder().path(pathPattern).build());
        return this;
    }
Adds a {@code pathPattern} that is supposed to be excluded from the {@link Route} built by this
{@link RouteBuilder}.
Please refer to <a href="https://armeria.dev/docs/server-basics#path-patterns">Path patterns</a>
to learn more about path pattern syntax.
core/src/main/java/com/linecorp/armeria/server/RouteBuilder.java