.net核心-如何在AuthorizationHandler上返回403？

public class CustomAuthorizationHandler : AuthorizationHandler<CustomRequirement>
{
    protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, CustomRequirement requirement)
    {
        // 在这里进行授权逻辑的处理

        if (授权失败)
        {
            context.Fail(); // 授权失败，返回403 Forbidden
        }
        else
        {
            context.Succeed(requirement); // 授权成功
        }

        return Task.CompletedTask;
    }
}

public class CustomRequirement : IAuthorizationRequirement
{
    // 可以在这里定义一些授权要求的属性或方法
}

services.AddAuthorization(options =>
{
    options.AddPolicy("CustomPolicy", policy =>
    {
        policy.Requirements.Add(new CustomRequirement());
    });
});

services.AddSingleton<IAuthorizationHandler, CustomAuthorizationHandler>();

[Authorize(Policy = "CustomPolicy")]
public IActionResult MyAuthorizedAction()
{
    // 授权成功的处理逻辑
}