public UDTFConfigurations setAccessStrategy(AccessStrategy accessStrategy) {
    this.accessStrategy = accessStrategy;
    if (accessStrategy instanceof SlidingTimeWindowAccessStrategy
        && ((SlidingTimeWindowAccessStrategy) accessStrategy).getZoneId() == null) {
      ((SlidingTimeWindowAccessStrategy) accessStrategy).setZoneId(zoneId);
    }
    return this;
  }
Used to specify the strategy for accessing raw query data in UDTF.

@param accessStrategy the specified access strategy. it should be an instance of {@link
    AccessStrategy}.
@return this
@see RowByRowAccessStrategy
@see SlidingTimeWindowAccessStrategy
@see SlidingSizeWindowAccessStrategy
iotdb-api/udf-api/src/main/java/org/apache/iotdb/udf/api/customizer/config/UDTFConfigurations.java