code: def testClusterAllocationSampleSimple3(self):
      self.templateLengthProcessData(
          SIMPLE_SAMPLES.SAMPLE_SIMPLE3,
          [5, 5],
          1.0,
          0.999,
          [10, 10, 10, 30],
      )
  
imports: import unittest
  import matplotlib
  from pyclustering.cluster.syncsom import syncsom
  from pyclustering.utils import read_sample
  from pyclustering.samples.definitions import SIMPLE_SAMPLES
label_desc: Use image node_id 11 for calling the SyncsomUnitTest obj's underlying member method code with example usage: obj.testClusterAllocationSampleSimple3() without return types