syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> BlockAnd<PlaceBuilder<'tcx>> {
context_before:         scrutinee_span: Span,
context_after:         let scrutinee_place_builder = unpack!(block = self.as_place_builder(block, scrutinee_id));