{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"\"`rust_analyzer`:"}]}
                "`rust_analyzer`: `|i32, u64| -> i8`",
                "`impl_fn`: `impl FnMut(i32, u64) -> i8`",
                "`with_id`: `{closure#14352}`, where that id is the unique number of the closure in r-a internals",