syntax_data: {"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let Some((otherwise, rest)) = arms.split_last() else {
context_before:     fn parse_match(&self, arms: &[ArmId], span: Span) -> PResult<SwitchTargets> {
context_after:             return Err(ParseError {