code: def test_cluster_allocation_two_diamonds(self):
      fcm_test_template.cluster_allocation(
          FCPS_SAMPLES.SAMPLE_TWO_DIAMONDS,
          [[0.71 - 0.51], [0.99 - 0.24]],
          2.0,
          [400, 400],
          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 21 for calling the fcm_unit_tests obj's underlying member method code with example usage: obj.test_cluster_allocation_two_diamonds() without return types