default Map<Integer,List<TransformSpec>> getPartitionTransformSpecs(org.apache.hadoop.hive.ql.metadata.Table table) {
    return null;
  }
Return a list of partition transform specifications. This method should be overwritten in case
{@link HiveStorageHandler#supportsPartitionTransform()} returns true.
@param table the HMS table, must be non-null
@return partition transform specification, can be null.
ql/src/java/org/apache/hadoop/hive/ql/metadata/HiveStorageHandler.java