Make it simpler to work with additional data

[bjarnef]

Describe your idea

Additional data is passed in as dictionary, however in workflow returned as string? via context.Record.AdditionalData.
Any reason this isn't Dictionay<string, object?>?

There is an method context.Record.SetAdditionalData(), but using it one should be careful as it will override existing:

context.Record.SetAdditionalData(additionalData);
context.Record.SetAdditionalData(new Dictionary<string, string?> { ["myOtherKey"] = "Test" });

Instead this can be used:

var additionalData = JsonSerializer.Deserialize<Dictionary<string, string?>>(context.Record.AdditionalData ?? string.Empty) ?? [];
additionalData["myOtherKey"] = "Test";
context.Record.SetAdditionalData(additionalData);

I think it would be useful to have a method which set/update key/value pair.

Furthermore from within backoffice, IIRC, it is not possible to see these in UI.

Context

No response