public OAuth2TokenDescriptorBuilder scope(String... scope) {
        this.scope.add(requireNonNull(scope, "scope"));
        return this;
    }
{@code scope} Token Introspection Response field,
OPTIONAL. An array of individual scope values.
oauth2/src/main/java/com/linecorp/armeria/common/auth/oauth2/OAuth2TokenDescriptorBuilder.java