Microsoft.Configuration.Extensions:如何将节/复杂值作为json字符串获取?

// appsettings.json
{
    "SomeServiceConfiguration": {
       "Server": "127.0.0.1",
       "Port": "25"
    }
}

可以使用绑定来访问数据:

IConfiguration configuration =  ...;
var section = configuration.GetSection("SomeServiceConfiguration");
var val = section.Value; // this is null
var t = new SomeServiceConfiguration();
section.Bind(t);

但是否有可能获得价值(节内容) “就像字符串” (事实上是json) {"Server": "127.0.0.1", "Port": "25"} ?