syntax_data: {"ast_node_type":"other","tokens":[{"end":25,"kind":"keyword","start":0,"text":"//"}]}
source_snippet: // when that is uplifted.
context_before: // FIXME(async_closures): Get rid of this in favor of `BoundVarReplacerDelegate`
context_after: struct FoldEscapingRegions<I: Interner> {