code: def build_test_collate_fn(opts, *args, **kwargs):
      collate_fn_name_test = getattr(
          opts, "dataset.collate_fn_name_test"
      )
      # for test time
      if collate_fn_name_test is not None:
          return COLLATE_FN_REGISTRY[collate_fn_name_test]
      return None
  
imports: import argparse
  from utils import logger
  from utils.registry import Registry
label_desc: Use image node_id 3 for calling a global function with example usage: build_test_collate_fn(opts) and returns: None, COLLATE_FN_REGISTRY