syntax_data: {"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"self.with_let_source(let_source,"}]}
source_snippet:                 self.with_let_source(let_source, |this| this.visit_expr(&self.thir[cond]));
context_before:                 };
context_after:                 self.with_let_source(LetSource::None, |this| {