While trying to check an empty map, a!isNullOrEmpty and a!isNotNullOrEmpty are not working, rather giving opposite result.
The result of
a!isNullOrEmpty(a!map())
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Hmm, it does seem odd - that being said, I'm pretty sure behind the scenes this function is just doing a length() check on the value. If I do length(a!map()) it returns 1, so that's probably why this is returning false.
If you'd like, you could probably submit a support case and have the team investigate it. My hunch though is that it is behaving as expected given the result using the length function.