byte[] defaultSecurityLabel;
ColumnVisibility cv = new ColumnVisibility(acuTableConf.get(Property.TABLE_DEFAULT_SCANTIME_VISIBILITY));
defaultSecurityLabel = cv.getExpression();
VisibilityFilter visFilter = new VisibilityFilter(colFilter, authorizations, defaultSecurityLabel);
return iterEnv.getTopLevelIterator(IteratorUtil.loadIterators(IteratorScope.scan, visFilter, extent, acuTableConf, options.serverSideIteratorList,
options.serverSideIteratorOptions, iterEnv, false));
}