syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"+"}]}
source_snippet:     + IrPrint<ty::TraitPredicate<Self>>
context_before:     + IrPrint<ty::TraitRef<Self>>
context_after:     + IrPrint<ty::HostEffectPredicate<Self>>