Method isSealed

src/main/java/org/codehaus/groovy/ast/ClassNode.java:1917–1920

@return true for native and emulated (annotation based) sealed classes @since 4.0.0

()

     * @since 4.0.0
     */
    public boolean isSealed() {
        if (redirect != null) return redirect.isSealed();
        return !getAnnotations(ClassHelper.SEALED_TYPE).isEmpty() || !getPermittedSubclasses().isEmpty();
    }

    /**
     * Determines whether this ClassNode has been resolved to an actual Java class.