code: def getIndexRepresentorTwoDimensionData(self):
      clusters = [[0, 1, 2, 3], [4, 5, 6, 7]]
      data = [
          [5.1, 5.2],
          [5.2, 5.1],
          [5.4, 5.2],
          [5.1, 5.0],
          [8.1, 8.0],
          [8.4, 8.2],
          [8.3, 8.4],
          [8.5, 8.5],
      ]
  
      return cluster_encoder(
          type_encoding.CLUSTER_INDEX_LIST_SEPARATION, clusters, data
      )
  
imports: import unittest
  import math
  import matplotlib
  from pyclustering.cluster.encoder import cluster_encoder
  from pyclustering.cluster.encoder import type_encoding
label_desc: Use image node_id 15 for calling the Test obj's underlying member method code with example usage: obj.getIndexRepresentorTwoDimensionData() and returns: cluster_encoder