syntax_data: {"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"&&"}]}
source_snippet:             && let Some((kind, is_async)) = fn_trait_and_async
context_before:         if trait_pred.polarity() == ty::PredicatePolarity::Positive
context_after:             && let ty::Tuple(types) = *trait_pred.skip_binder().trait_ref.args.type_at(1).kind()