{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"ExistentialTraitRef(ExpectedFound<ty::PolyExistentialTraitRef<'tcx>>),"}]}
    ExistentialTraitRef(ExpectedFound<ty::PolyExistentialTraitRef<'tcx>>),
    PolySigs(ExpectedFound<ty::PolyFnSig<'tcx>>),
    ExistentialProjection(ExpectedFound<ty::PolyExistentialProjection<'tcx>>),