code: def step_hash(self, step):
      return self._step_hash_fn(step)
  
imports: from typing import Generic, Union, Tuple, TypeVar, Dict, Iterator, Any, List
  from itertools import islice
  import numpy
  import logging
  from aim.sdk.tracker import STEP_HASH_FUNCTIONS
  from aim.storage.treeview import TreeView
  from aim.storage.arrayview import ArrayView
  from aim.storage.context import Context
  from aim.storage.hashing import hash_auto
  from typing import TYPE_CHECKING
label_desc: Use image node_id 2 for calling the SequenceData obj's underlying member method code with example usage: obj.step_hash(step) and returns: self