class_docstr: Defines a common interface of replay buffer.
  
  You can append transitions to the replay buffer and later sample from it.
  Replay buffers are typically used in experience replay.
docstr: Load the content of the buffer from a file.
  
  Args:
      filename (str): Path to a file.
docstr_tok: ["Load","the","content","of","the","buffer","from","a","file",".","Args",":","filename","(","str",")",":","Path","to","a","file","."]
code: def load(self, filename):
      """Load the content of the buffer from a file.
  
      Args:
          filename (str): Path to a file.
      """
      raise NotImplementedError
  
imports: from abc import ABCMeta
  from abc import abstractmethod
  from abc import abstractproperty
  import itertools
  import numpy
  from chainerrl.misc.batch_states import batch_states
label_desc: Use image node_id 5 for calling the AbstractReplayBuffer obj's underlying member method code with example usage: obj.load(filename) without return types