docstr: Reload the data for the next epoch.
code: def reload(self):
      """Reload the data for the next epoch."""
      self.partitioner.reload()
      self.batch_iterator = iter(self.data_generator())
  
imports: import abc
  import glob
  import logging
  import os
  import shelve
  import shutil
  import tempfile
  from datetime import datetime
  import numpy
  import tensorflow
  from .graph_partitioner import PARTITION_ALGO_REGISTRY, AbstractGraphPartitioner
label_desc: Use image node_id 13 for calling the PartitionDataManager obj's underlying member method code with example usage: obj.reload() without return types