https://download.eclipse.org/nattable/releases/2.4.0/apidocs/org/eclipse/nebula/widgets/nattable/examples/examples/_105_Persistence/PersistentColumnGroupGridExample.html
PersistentColumnGroupGridExample (Nebula NatTable 2.4.0-SNAPSHOT API)
declaration: package: org.eclipse.nebula.widgets.nattable.examples.examples._105_Persistence, class: PersistentColumnGroupGridExample
nebulanattablesnapshotapi