code: def lambda_lr_scheduler(iteration, lr0, n, a):
      return lr0 * pow((1.0 - 1.0 * iteration / n), a)
  
file_path: ignite/examples/references/segmentation/pascal_voc2012/configs/baseline_dplv3_resnet101.py
imports: import os
  from functools import partial
  import albumentations
  import cv2
  import torch.nn
  import torch.optim
  import torch.optim.lr_scheduler
  from albumentations.pytorch import ToTensorV2
  from dataflow import get_train_val_loaders, ignore_mask_boundaries
  from torchvision.models.segmentation import deeplabv3_resnet101
label_desc: Use image node_id 2 for calling a global function with example usage: lambda_lr_scheduler(iteration, lr0, n, a) and returns: unknown