{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"if"}]}
                            if let Binding { name, mode: BindingAnnotation::Unannotated, .. } =
                        if let Pat::Bind { id, subpat: None } = &self.store[arg.pat] {
                                &self.store.bindings[*id]