code: def testGridEightConnectionsMatrixRepresentation(self):
      net = network(25, type_conn=conn_type.GRID_EIGHT)
      self.templateGridEightConnectionsTest(net)
  
imports: import unittest
  import math
  from pyclustering.nnet import network, conn_type, conn_represent
label_desc: Use image node_id 26 for calling the NnetUnitTest obj's underlying member method code with example usage: obj.testGridEightConnectionsMatrixRepresentation() without return types