func addPolicyBinding(bindings map[string]map[string]authorizationapi.PolicyBinding, binding authorizationapi.PolicyBinding) {
	resourceVersion += 1
	binding.ResourceVersion = fmt.Sprintf("%d", resourceVersion)

	namespacedBindings, ok := bindings[binding.Namespace]
	if !ok {
		namespacedBindings = make(map[string]authorizationapi.PolicyBinding)
		bindings[binding.Namespace] = namespacedBindings
	}

	namespacedBindings[binding.Name] = binding
}