{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":".decode(CrateMetadataRef"}]}
            .decode(CrateMetadataRef { cdata: &cdata, cstore })
            .incoherent_impls
            .map(|incoherent_impls| (incoherent_impls.self_ty, incoherent_impls.impls))