syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// borrow (i.e. Deep > Shallow).
context_before:     /// Store for each place the kind of borrow to take. In case of conflicts, we take the strongest
context_after:     /// Invariant: for any place in `fake_borrows`, all the prefixes of this place that are