{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"query"}]}
    query type_of_opaque(key: DefId) -> Result<ty::EarlyBinder<'tcx, Ty<'tcx>>, CyclePlaceholder> {
    /// This query will panic if the given definition is not an opaque type.
        desc { |tcx|