syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"ty::PredicatePolarity::Positive"}]}
source_snippet:                             ty::PredicatePolarity::Positive => {
context_before:                         Some(LangItem::Sized) => match pred.polarity {
context_after:                                 has_sized_bound = true;