code: def ismap(x):
      if not isinstance(x, torch.Tensor):
          return False
      return (len(x.shape) == 4) and (x.shape[1] > 3)
  
file_path: colossalai/examples/images/diffusion/ldm/util.py
imports: import importlib
  from inspect import isfunction
  import numpy
  import torch
  from PIL import Image, ImageDraw, ImageFont
  from torch import optim
label_desc: Use image node_id 2 for calling a global function with example usage: ismap(x) and returns: unknown, False