xml_dom.py: get_id(): If the node doesn't have an ID, assumes the node itself is the ID. This enables backward (child-to-parent) pointers whose target is a text element containing an ID, rather than a regular element with an ID attribute.
xml_dom.py: get_id(): If the node doesn't have an ID, assumes the node itself is the ID. This enables backward (child-to-parent) pointers whose target is a text element containing an ID, rather than a regular element with an ID attribute.