dom/dom.go
func (p CopyToParams) WithInsertBeforeNodeID(insertBeforeNodeID cdp.NodeID) *CopyToParams {
	p.InsertBeforeNodeID = insertBeforeNodeID
	return &p
}
func (p CopyToParams) WithInsertBeforeNodeID(insertBeforeNodeID cdp.NodeID) *CopyToParams {
	p.InsertBeforeNodeID = insertBeforeNodeID
	return &p
}
// WithInsertBeforeNodeID drop the copy before this node (if absent, the copy
// becomes the last child of targetNodeId).