DomDecor: why is object allowed to be passed to ctor?

[atapin]

Why checking with instanceof and then casting if we just can pass instance of type Node?

    @SuppressWarnings("PMD.ConstructorOnlyInitializesOrCallOtherConstructors")
    DomDecor(final Object doc) throws DecorException {
        if (doc != null && !(doc instanceof Node)) {
            throw new DecorException(
                String.format(
                    "Instance of org.w3c.dom.Node required, while %s provided",
                    doc.getClass().getName()
                )
            );
        }
        this.node = (Node) doc;
    }

[0crat]

@yegor256 please, pay attention to this issue