syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let ExprKind::Scope { region_scope, lint_level, value } = expr.kind {
context_before:         let source_info = this.source_info(expr_span);
context_after:             return this.in_scope((region_scope, source_info), lint_level, |this| {