@Override
  public void setConf(Configuration conf) {
    this.conf = conf;
  }
This ScanLabelGenerator enforces a set of predefined authorizations for a given user, the set
defined by the admin using the VisibilityClient admin interface or the set_auths shell command.
Any authorizations requested with Scan#authorizations will be ignored.
hbase-server/src/main/java/org/apache/hadoop/hbase/security/visibility/EnforcingScanLabelGenerator.java