code: def runTest(self):
      ner_model = NerDLModel.pretrained()
      print(ner_model.getClasses())
  
imports: import unittest
  import pytest
  from sparknlp.annotator import *
label_desc: Use image node_id 1 for calling the NerDLModelTestSpec obj's underlying member method code with example usage: obj.runTest() without return types