code: def testValidParameterSpec(self):
      try:
          x = ParameterSpec(dataType="int", accessMode="Read")
          x.invariant()
  
          x = ParameterSpec(
              description="description",
              dataType="int",
              count=3,
              defaultValue=-6,
              accessMode="Create",
          )
          x.invariant()
      except:
          self.fail("Got unexpected exception")
  
file_path: nupic-legacy/tests/unit/nupic/regions/regions_spec_test.py
imports: import unittest2
  from nupic.regions.spec import Spec, InputSpec, OutputSpec, ParameterSpec, CommandSpec
label_desc: Use image node_id 6 for calling the KNNAnomalyClassifierRegionTest obj's underlying member method code with example usage: obj.testValidParameterSpec() without return types