public Collection<DepTuple> inAll(DepTuple template, Context ctx) throws DepSpaceException {
   if (policyEnforcer.canExecuteInAll(ctx.getInvokerId(), template, ctx)) {
     return upperLayer.inAll(template, ctx);
   } else {
     throw new DepSpaceOperationNotAllowed("inAll", ctx.getInvokerId(), template);
   }
 }