syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"/*"}]}
source_snippet:         /* local_decls: */ &mut IndexVec<Local, LocalDecl<'tcx>>,
context_before:         /* context: */ PlaceContext,
context_after:         /* stmts: */ &mut Vec<Statement<'tcx>>,