jodd-lagarto/src/main/java/jodd/lagarto/dom/Node.java
protected void initChildNodes(final Node newNode) {
		if (childNodes == null) {
			childNodes = new ArrayList<>();
		}
		if (ownerDocument != null) {
			if (newNode.ownerDocument != ownerDocument) {
				changeOwnerDocument(newNode, ownerDocument);
			}
		}
	}
protected void initChildNodes(final Node newNode) {
		if (childNodes == null) {
			childNodes = new ArrayList<>();
		}
		if (ownerDocument != null) {
			if (newNode.ownerDocument != ownerDocument) {
				changeOwnerDocument(newNode, ownerDocument);
			}
		}
	}
Initializes child nodes list when needed.
Also fix owner document for new node, if needed.