syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"adt_def:"}]}
source_snippet:                         adt_def: *adt_def,
context_before:                     ty::Adt(adt_def, args) => ExprKind::Adt(Box::new(AdtExpr {
context_after:                         variant_index: adt_def.variant_index_with_ctor_id(def_id),