public SELF methods(HttpMethod... methods) {
        return methods(ImmutableSet.copyOf(requireNonNull(methods, "methods")));
    }
Sets the {@link HttpMethod}s that an {@link HttpService} will support. If not set,
{@link HttpMethod#knownMethods()}s are set.

@see #path(String)
@see #pathPrefix(String)
core/src/main/java/com/linecorp/armeria/server/AbstractBindingBuilder.java