syntax_data: {"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:                     match arg.kind() {
context_before:                 iter::zip(user_args.args, BoundVar::ZERO..).all(|(arg, cvar)| {
context_after:                         GenericArgKind::Type(ty) => match ty.kind() {