syntax_data: {"ast_node_type":"other","tokens":[{"end":16,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:         } else {
context_before:             self.check_binding_is_irrefutable(pat, "local binding", scrut, Some(span))
context_after:             let Ok(refutability) = self.is_let_irrefutable(pat, scrut) else { return };