{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"const"}]}
    const CFG_ATTR_GRAMMAR_HELP: &str = "#[cfg_attr(condition, attribute, other_attribute, ...)]";
) -> Option<(MetaItemInner, Vec<(AttrItem, Span)>)> {
    const CFG_ATTR_NOTE_REF: &str = "for more information, visit \