syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"k.ends_with(suffix).then(||"}]}
source_snippet:             k.ends_with(suffix).then(|| {
context_before:         let ret = prefixed_items.into_iter().filter_map(move |(k, v)| {
context_after:                 (