handle
Called when a required field is null or blank and marked with net.ririfa.yacla.annotation.IfNullEvenRequired.
Parameters
field
the current value of the field (typically null or blank string)
Called when a required field is null or blank and marked with net.ririfa.yacla.annotation.IfNullEvenRequired.
the current value of the field (typically null or blank string)