syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                     if matches!(ty.kind(), ty::Bound(ty::INNERMOST, bt) if var == bt.var()) {
context_before:                 ty::GenericArgKind::Type(ty) => {
context_after:                         var = var + 1;