{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"let"}]}
            let mangled_fn_name: &str = self.tcx.symbol_name(instance).name;
            let llfn = self.get_fn(instance);
            llvm_cov::create_pgo_func_name_var(llfn, mangled_fn_name)