Macro make_exemplar_chars_unicode_set_property

macro_rules! make_exemplar_chars_unicode_set_property {
    (
        // currently unused
        marker: $marker_name:ident;
        keyed_data_marker: $keyed_data_marker:ty;
        func:
        $vis:vis fn $funcname:ident();
        $(#[$attr:meta])*
        $vis2:vis fn $constname:ident();
    ) => { ... };
}