syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // `tcx.type_of(def_id)` identical to `tcx.make_adt(def, identity_args)`
context_before:         |adt_def: ty::AdtDef<'tcx>| adt_def.destructor(tcx).map(|_| DtorType::Significant);
context_after:     drop_tys_helper(