code: def test_caffe_reader_alias():
      new_pipe = caffe_pipe(fn.readers.caffe, caffe_db_folder)
      legacy_pipe = caffe_pipe(fn.caffe_reader, caffe_db_folder)
      compare_pipelines(
          new_pipe, legacy_pipe, batch_size_alias_test, 50
      )
  
imports: from nvidia.dali import Pipeline, pipeline_def
  import nvidia.dali.ops
  import nvidia.dali.fn
  import nvidia.dali.types
  from numpy.testing import assert_array_equal
  import os
  from test_utils import compare_pipelines
  from test_utils import get_dali_extra_path
label_desc: Use image node_id 4 for calling a global function with example usage: test_caffe_reader_alias() without return types