syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"//"}]}
source_snippet: // understanding significant destructor look at `adt_significant_drop_tys`.
context_before: // ADT has a destructor or if the ADT only has a significant destructor. For
context_after: fn drop_tys_helper<'tcx>(