code: def test_get_gru_cell():
      cell = get_rnn("GRU")(10, 10)
      assert isinstance(cell, GRU)
      assert isinstance(cell, nn.GRU)
  
file_path: pytorch-forecasting/tests/test_models/test_nn/test_rnn.py
imports: import itertools
  import pytest
  import torch
  from torch import nn
  from pytorch_forecasting.models.nn.rnn import GRU, LSTM, get_rnn
label_desc: Use image node_id 2 for calling a global function with example usage: test_get_gru_cell() without return types