syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// get unified with your placeholder region: if you want to check whether
context_before: /// there's also the risk that some inference variable laying around will
context_after: /// `for<'a> Foo<'_>: 'a`, and you instantiate your bound region `'a`