docs: private void addContainerproperties() {
          /* Create HierarchicalContainer container */
          container.addContainerProperty(SPUILabelDefinitions.NAME, String.class, null);
          container.addContainerProperty(SPUILabelDefinitions.VAR_CREATED_BY, String.class, null);
          container.addContainerProperty(SPUILabelDefinitions.VAR_CREATED_DATE, Date.class, null);
          container.addContainerProperty(SPUILabelDefinitions.VAR_LAST_MODIFIED_BY, String.class, null, false, true);
          container.addContainerProperty(SPUILabelDefinitions.VAR_LAST_MODIFIED_DATE, String.class, null, false, true);
          container.addContainerProperty(SPUILabelDefinitions.VAR_TARGET_STATUS, TargetUpdateStatus.class, null);
          container.addContainerProperty(SPUILabelDefinitions.VAR_DESC, String.class, "", false, true);
  
          container.addContainerProperty(ASSIGN_DIST_SET, DistributionSet.class, null, false, true);
          container.addContainerProperty(INSTALL_DIST_SET, DistributionSet.class, null, false, true);
          container.addContainerProperty(SPUILabelDefinitions.ASSIGNED_DISTRIBUTION_NAME_VER, String.class, "");
          container.addContainerProperty(SPUILabelDefinitions.INSTALLED_DISTRIBUTION_NAME_VER, String.class, null);
      }