syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"StmtKind::Expr"}]}
source_snippet:             StmtKind::Expr { expr, .. } => self.thir[expr].span,
context_before:         let span = match stmt.kind {
context_after:             StmtKind::Let { span, .. } => span,