rawDB.Close()

	if err := DB.Transaction(func(tx *gorm.DB) error {
		return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}

	if err := DB.Session(&gorm.Session{PrepareStmt: true}).Transaction(func(tx *gorm.DB) error {
		return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}
}

    /**
     * Returns the system property value for the specified key.
     *
     * @param key the property key
     * @return the property value, or null if not found
     */
    public static String getProperty(String key) {
        return System.getProperty(key);
    }

    /**
     * Returns the system property value for the specified key, or the default value if not found.

        String CLEAN = "clean";

        /**
         * Returns the name of this phase.
         *
         * @return the phase name
         */
        @Nonnull
        String name();

        /**
         * Returns the list of plugins bound to this phase.
         *
         * @return the list of plugins
         */
        @Nonnull
        List<Plugin> plugins();

        if (current < maxValueDivs[radix]) {
          return false;
        }
        if (current > maxValueDivs[radix]) {
          return true;
        }
        // current == maxValueDivs[radix]
        return digit > maxValueMods[radix];
      }

      // current < 0: high bit is set
      return true;
    }
  }

  /**
   * Returns a string representation of x, where x is treated as unsigned.

     *
     * @return the threshold
     */
    public int threshold() {
        return threshold;
    }

    /**
     * Returns the HTTP method for the request.
     *
     * @return the method
     */
    public Method method() {
        return method;
    }

    /**
     * Returns the body content of the request.
     *
     * @return the body
     */

	return meta.lifecycleConfig, meta.LifecycleConfigUpdatedAt, nil
}

// GetNotificationConfig returns configured notification config
// The returned object may not be modified.
func (sys *BucketMetadataSys) GetNotificationConfig(bucket string) (*event.Config, error) {
	meta, _, err := sys.GetConfig(GlobalContext, bucket)
	if err != nil {
		return nil, err
	}
	return meta.notificationConfig, nil
}

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)