code: def write(self, arg):
      pass
  
file_path: gluon-cv/scripts/pose/alpha_pose/validate_tools.py
imports: import sys
  from tqdm import tqdm
  import mxnet
  import gluoncv
  from gluoncv.data import mscoco
  from gluoncv.data.transforms.pose import flip_heatmap, heatmap_to_coord_alpha_pose
  from gluoncv.data.transforms.presets.alpha_pose import AlphaPoseDefaultValTransform
  from gluoncv.utils.metrics.coco_keypoints import COCOKeyPointsMetric
  from mxnet import gluon, nd
label_desc: Use image node_id 1 for calling the NullWriter obj's underlying member method code with example usage: obj.write(arg) without return types