class_docstr: Helper class for media sequence types.
class_docstr_tok: ["Helper","class","for","media","sequence","types","."]
docstr: Get tracked records longest list length or `None` if Text objects are tracked.
  
  Required to implement ranged and sliced data fetching.
docstr_tok: ["Get","tracked","records","longest","list","length","or","`","None","`","if","Text","objects","are","tracked",".","Required","to","implement","ranged","and","sliced","data","fetching","."]
code: def record_length(self):
      """Get tracked records longest list length or `None` if Text objects are tracked.
  
      Required to implement ranged and sliced data fetching.
      """
      return self._meta_tree.get("record_max_length", None)
  
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 1 for calling the MediaSequenceBase obj's underlying member method code with example usage: obj.record_length() and returns: self