syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"ty::Tuple(field_tys)"}]}
source_snippet:             ty::Tuple(field_tys) => {
context_before:             // A 100-tuple isn't "trivial", so doing this only for reasonable sizes.
context_after:                 field_tys.len() <= 3 && field_tys.iter().all(Self::is_trivially_pure_clone_copy)