code: def test_GCN_init():
      G, _ = create_graph_features()
  
      generator = FullBatchNodeGenerator(G)
      gcnModel = GCN([2], generator, activations=["relu"], dropout=0.5)
  
      assert gcnModel.layer_sizes == [2]
      assert gcnModel.activations == ["relu"]
      assert gcnModel.dropout == 0.5
  
imports: import stellargraph
  from stellargraph.layer.gcn import *
  from stellargraph.mapper import FullBatchNodeGenerator, FullBatchLinkGenerator
  from stellargraph.core.graph import StellarGraph
  from stellargraph.core.utils import GCN_Aadj_feats_op
  import networkx
  import pandas
  import numpy
  from tensorflow import keras
  import tensorflow
  import pytest
  from ..test_utils.graphs import create_graph_features
  from ..None import test_utils
label_desc: Use image node_id 5 for calling a global function with example usage: test_GCN_init() without return types