{"ast_node_type":"variable","tokens":[{"end":96,"kind":"keyword","start":0,"text":"let"}]}
                let VarDebugInfo { source_info, composite, value, name: _, argument_index: _ } =
            fn super_var_debug_info(&mut self, var_debug_info: &$($mutability)? VarDebugInfo) {
                    var_debug_info;