{"ast_node_type":"other","tokens":[{"end":23,"kind":"keyword","start":0,"text":"pub"}]}
    pub zero_pad: bool,
    /// The `0` flag. E.g. the `0` in `{:02x}`.
    /// The `x` or `X` flag (for `Debug` only). E.g. the `x` in `{:x?}`.