syntax_data: {"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let places = local_decls.iter_enumerated().skip(1).take(body.arg_count).filter_map(
context_before:             // Gather all arguments, skip return value.
context_after:                 |(local, decl)| {