public void TestWrite()
{
JsonSerializerOptions options = new JsonSerializerOptions();
options.SetupExtensions();
object value = new SerializableError {
{ "key1", 12 }, { "key2", "value" }
};
const string json = @"{""key1"":12,""key2"":""value""}";
string result = JsonSerializer.Serialize(value, value.GetType(), options);
Assert.Equal(json, result);
}