code: def test_cluster_allocation_tetra(self):
      fcm_test_template.cluster_allocation(
          FCPS_SAMPLES.SAMPLE_TETRA,
          [
              [1.001, -0.083, -0.681],
              [-0.811, 0.476, -0.759],
              [-0.956, -1.427, -0.020],
              [0.225, 0.560, 1.794],
          ],
          2.0,
          [100, 100, 100, 100],
          False,
      )
  
imports: import unittest
  import matplotlib
  from pyclustering.cluster.tests.fcm_templates import fcm_test_template
  from pyclustering.cluster.fcm import fcm
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, FAMOUS_SAMPLES, FCPS_SAMPLES
label_desc: Use image node_id 22 for calling the fcm_unit_tests obj's underlying member method code with example usage: obj.test_cluster_allocation_tetra() without return types