code: def testGridFourStructure40GridProperty(self):
      net = network(
          40,
          type_conn=conn_type.GRID_FOUR,
          conn_repr=conn_represent.LIST,
          height=20,
          width=2,
      )
      assert net.height == 20
      assert net.width == 2
  
imports: import unittest
  import math
  from pyclustering.nnet import network, conn_type, conn_represent
label_desc: Use image node_id 38 for calling the NnetUnitTest obj's underlying member method code with example usage: obj.testGridFourStructure40GridProperty() without return types