syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"hir::ExprKind::Closure(hir::Closure"}]}
source_snippet:             hir::ExprKind::Closure(hir::Closure { .. }) => {
context_after:                 let closure_ty = self.typeck_results.expr_ty(expr);