ReaderWriterFeatures require that the minimum reader version is
Sealed Abstract Class
ReaderWriterFeature is a Scala sealed abstract class which means that all of the implementations are in the same compilation unit (a single file).
ReaderWriterFeature takes the following to be created:
ReaderWriterFeature is an abstract class and cannot be created directly. It is created indirectly for the concrete CLASSs.
Minimum Reader Version¶
minReaderVersion is part of the TableFeature abstraction.