Indent the topicref so it becomes a child of the preceding topicref.
This operation can be used as a ContextualOperation on DITA
topicref elements and specializations thereof. Using this on topics directly will not work, although the setContextNodeIdToTopicrefReferencingCurrentDocument transform can be used to obtain the NodeId for the currently focused document.
Move the document into the previous one.
Imported operation data
The node ID of the topicref