Update readme.md

[STRUDSO]

Changed scrub xml and scrub json to serializer and moved them up together with the other serializer snippets.

Also a question was trying to play around with this for mvc problem details, got a traceid as part of output.
I could perhaps do a regex to match a traceid, but would rather not...
I also tried to just manipulate the object like so:

 var content = await result.Content.ReadFromJsonAsync<ProblemDetails>();

            Assert.NotNull(content);
            content.Extensions["traceId"] = "[any trace...]";

            InlineSnapshot
                .Validate

so my solution ended being this

 var content = await result.Content.ReadFromJsonAsync<ProblemDetails>();
            InlineSnapshot
                .WithSettings(x => x.ScrubLinesWithReplace(
                    x => x.Contains("traceid", StringComparison.OrdinalIgnoreCase) ? "  traceId: [any trace...]" : x
                    ))
                .Validate(content, """
                    Title: Validation Error
                    Status: 400
                    Detail:
                      Validation failed: 
                       -- PageNumber: 'Page Number' must be greater than '0'. Severity: Error
                    Instance: GET /meetinggroupproposals
                    Extensions:
                      traceId: [any trace...]
                      Errors:
                        [
                          {
                            "key": "PageNumber",
                            "value": "'Page Number' must be greater than '0'."
                          }
                        ]
                    """);
        }
                    

but maybe there is a better way?

[meziantou]

but maybe there is a better way?

You can use a custom converter

var converter = new ScrubDictionaryKeyValuePairValue((key, value) =>
{
    if (key == "traceId")
        return "[redacted]";
    return value;
});
options.AddAttribute<ProblemDetails>(obj => obj.Extensions, new HumanReadableConverterAttribute(converter));

class ScrubDictionaryKeyValuePairValue(Func<string, object?, object?> scrubber) : HumanReadableConverter<IEnumerable<KeyValuePair<string, object?>>>
{
    protected override void WriteValue(HumanReadableTextWriter writer, IEnumerable<KeyValuePair<string, object?>> value, HumanReadableSerializerOptions options)
    {
        Debug.Assert(value is not null);
        if (options.DictionaryKeyOrder is not null)
        {
            value = value.OrderBy(value => value.Key, options.DictionaryKeyOrder);
        }

        var hasItem = false;
        foreach (var prop in value)
        {
            var scrub = scrubber(prop.Key, prop.Value);
            if (scrub is null)
                continue;

            if (!hasItem)
            {
                writer.StartObject();
                hasItem = true;
            }

            writer.WritePropertyName(prop.Key);
            HumanReadableSerializer.Serialize(writer, scrub, options);
        }

        if (hasItem)
        {
            writer.EndObject();
        }
        else
        {
            writer.WriteEmptyObject();
        }
    }
}