class_docstr: Wandb class for 3D point clouds.
  
  Arguments:
      data_or_path: (numpy array, string, io)
          Object3D can be initialized from a file or a numpy array.
  
          You can pass a path to a file or an io object and a file_type
          which must be one of SUPPORTED_TYPES
  
  The shape of the numpy array must be one of either:
  ```
  [[x y z],       ...] nx3
  [[x y z c],     ...] nx4 where c is a category with supported range [1, 14]
  [[x y z r g b], ...] nx6 where is rgb is color
  ```
code: def get_media_subdir(cls: Type["Object3D"]) -> str:
      return os.path.join("media", "object3D")
  
imports: import codecs
  import json
  import os
  import sys
  from typing import TYPE_CHECKING, ClassVar, Optional, Sequence, Set, TextIO, Tuple, Type, Union
  import wandb
  from wandb import util
  from wandb.sdk.lib import runid
  from wandb.sdk.lib.paths import LogicalPath
  from .None import _dtypes
  from ._private import MEDIA_TMP
  from .base_types.media import BatchableMedia
label_desc: Use image node_id 5 for calling the Object3D obj's underlying member method code with example usage: obj.get_media_subdir(cls) and returns: os