{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"//!"}]}
//! the macro invocation is now over, `bb_items` with threads that are waiting on
//! As it processes them, it fills up `eof_items` with threads that would be valid if
//! a Rust non-terminal like `$e:expr`, and `next_items` with threads that are waiting