{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"const"}]}
    const TUPLE_FIELD_NAMES: [&'static str; 16] = [
fn tuple_field_name(field_index: usize) -> Cow<'static, str> {
        "__0", "__1", "__2", "__3", "__4", "__5", "__6", "__7", "__8", "__9", "__10", "__11",