syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"ty::ClauseKind::HostEffect(HostEffectPredicate"}]}
source_snippet:             ty::ClauseKind::HostEffect(HostEffectPredicate { trait_ref, constness })
context_before:         self.map_bound(|trait_ref| {
context_after:         })