syntax_data: {"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"&&"}]}
source_snippet:             && let Some(ty::ImplTraitInTraitData::Trait { fn_def_id, .. }) =
context_before:         let fn_args = if self.tcx().features().return_type_notation()
context_after:                 self.tcx().opt_rpitit_info(def_id)