code: def test_elbow_one_dimensional_simple_07(self):
      elbow_test_template.calculate_elbow(
          SIMPLE_SAMPLES.SAMPLE_SIMPLE7,
          SIMPLE_ANSWERS.ANSWER_SIMPLE7,
          1,
          10,
          False,
      )
  
imports: import unittest
  import matplotlib
  from pyclustering.cluster.center_initializer import random_center_initializer
  from pyclustering.cluster.elbow import elbow
  from pyclustering.cluster.tests.elbow_template import elbow_test_template
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, SIMPLE_ANSWERS
label_desc: Use image node_id 18 for calling the elbow_unit_test obj's underlying member method code with example usage: obj.test_elbow_one_dimensional_simple_07() without return types