code: def Estimator(request):
      return request.param
  
file_path: gluonts/test/mx/model/seq2seq/test_model.py
imports: import pytest
  from gluonts.mx import MQCNNEstimator, MQRNNEstimator
  from gluonts.mx.distribution import GaussianOutput, ISQFOutput
  from gluonts.testutil.dummy_datasets import make_dummy_datasets_with_features
label_desc: Use image node_id 2 for calling a global function with example usage: Estimator(request) and returns: request