VerifyJson shall use the GsonBuilder function passed when reorder is false.

[ShadyAbuKalam]

I have these lines
Function1<GsonBuilder, GsonBuilder> gsonSerializeNull = GsonBuilder::serializeNulls; JsonApprovals.verifyJson(jsonString, false, gsonSerializeNull);

Internally JsonApprovals will call JsonUtils.prettyPrint that creates a new Gson object without the configuration we passed, so we still get rid of nulls, that I still want.

Some suggested possible solutions:

1. Change the prettyPrint to accept the Gson customization function.
2. Change the prettyPrint function to consider removing nulls is messing up with json. ( I prefer this one )
3. Write the PrettyPrint function inside the JsonApproval module.

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I am willing to do this as PR, if maintainers agree.

[LarsEckart]

Indeed, this should have been possible before.
We did option 1 and it will be part of the next release.