Feature request : Having Node.copy() or LexborNode.copy()

[LeDilam]

If we have selected a node in the tree, and we want to modify the sub-tree (like filtering out some sub-branch) without affecting the original tree, we have to make a copy of the node and it's children.
But there is no Node.copy() or LexborNode.copy(). So instead of doing node_copy = node.copy(), we currently need to do node_copy = HTMLParser(node.html).body.child which looks laborious.

It seems that .clone() can only copy the whole tree which is not what I want.

So I'm asking, could we get a copy function for node ?