public static Authorizations getAuthorizationsFromConf(Configuration conf) {
    Preconditions.checkNotNull(conf);

    String authorizationStr = conf.get(AUTHORIZATIONS_KEY, null);

    return getAuthorizationsFromValue(authorizationStr);
  }
Extract any configuration on Authorizations to be used from the provided Configuration. If a
non-null value is not present in the configuration, a null object is returned

@return Authorization built from configuration value, null if no value is present in conf
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/serde/AccumuloSerDeParameters.java