/// <summary>
 /// 设置策略类型
 /// </summary>
 public static void SetPolicyType <T>(this ILuaSqlPolicyManager mgr, string policyName)
     where T : ISqlConfigPolicy
 {
     mgr.SetPolicyType(policyName, typeof(T));
 }
 /// <summary>
 /// 设置策略类型
 /// </summary>
 public static void SetPolicyType <T>(this ILuaSqlPolicyManager mgr)
     where T : ISqlConfigPolicy
 {
     mgr.SetPolicyType(typeof(T));
 }