syntax_data: {"ast_node_type":"variable","tokens":[{"end":47,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let dtor = match def.destructor(self) {
context_before:     pub fn destructor_constraints(self, def: ty::AdtDef<'tcx>) -> Vec<ty::GenericArg<'tcx>> {
context_after:             None => {