syntax_data: {"ast_node_type":"variable","tokens":[{"end":22,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let kind =
context_before:         ty::Tuple(tys) => {
context_after:                 if tys.len() == 0 { StructKind::AlwaysSized } else { StructKind::MaybeUnsized };