{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"($mod_item:ident"}]}
    ($mod_item:ident -> $( $typ:ident in $fld:ident -> $ast:ty ),+ $(,)? ) => {
macro_rules! mod_items {
        #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]