code: def num_dim(item):
      return len(item)
  
file_path: chitra/chitra/coordinates.py
imports: from typing import TYPE_CHECKING, List, Optional, Tuple, Union
  import numpy
  from imgaug.augmentables import bbs
label_desc: Use image node_id 3 for calling the BoundingBoxes obj's underlying member method code with example usage: obj.num_dim(item) and returns: len