syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // `x..=y` where `x < y`.
context_before:             (RangeEnd::Excluded, Some(Ordering::Less)) => {}
context_after:             (RangeEnd::Included, Some(Ordering::Less)) => {}