如何在ConfigureServices方法中获取IOptions？

我有asp.net核心应用程序.我想使用IOptions模式从appsettings.json注入值.所以我有一个类SecurityHeaderOptions,并且还有目标类,SecurityHeadersBuilder其构造函数IOptions作为参数.

我知道.net核心可以在用容器注册后SecurityHeadersBuilder通过注入隐式创建实例IOptions.

但是,我想显式创建实例SecurityHeadersBuilder,调用其方法之一,然后使用容器注册实例.

public sealed class SecurityHeaderOptions
{
    public string FrameOption { get; set; }    
    public string XssProtection { get; set; }
}


public class SecurityHeadersBuilder
{
    private readonly SecurityHeaderOptions _options = null;

    public SecurityHeadersBuilder(IOptions options)
    {
        _options = options.Value;    
    }

    public SecurityHeadersBuilder AddDefaultPolicy()
    {
        AddFrameOptions();
        AddConetntSecurityPolicy();
        return this;
    }
}

public void ConfigureServices(IServiceCollection services)
{        
    services.Configure(Configuration.GetSection("SecurityHeaderOptions"));

    services.AddScoped(provider => 
           new SecurityHeadersBuilder(?????).AddDefaultPolicy())
}

public void ConfigureServices(IServiceCollection services)
{
    // secOpts available for use in ConfigureServices
    var secOpts = Configuration
        .GetSection("SecurityHeaderOptions")
        .Get();

    ...
}

public void ConfigureServices(IServiceCollection services)
{
    services.Configure(Configuration.GetSection("SecurityHeaderOptions"));            
    services.AddScoped(provider =>
    {
        var option = provider.GetService>();
        return new SecurityHeadersBuilder(option)
            .AddDefaultPolicy();
    });
}