Setting a property attribute to '0' unsets it

[DyspC]

Seen on an integer's minimum constraint

The field can be set as anything except 0 (then it removes the attribute)

This is probably due to the conditions in this class testing falsiness instead of nullishness

[EricWittmann]

Crap - good catch. This would be a rare difference between apicurio-data-models when used as a Java library vs. when used as a Javascript library.