syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// relations stored in the `FreeRegionMap`. Note that these relations
context_before: /// *scope*, which the region is assumed to outlive, as well as other
context_after: /// aren't checked when you `make_subregion` (or `eq_types`), only by