code: def testAppendDynamic(self):
      # we feed the data to dlm4 via two segments
      dlm4 = dlm(self.data[0:11])
      (
          dlm4
          + self.trend1
          + dynamic(features=self.features[0:11], discount=1)
      )
      dlm4.fitForwardFilter()
      dlm4.append(self.data[11:20])
      dlm4.append(self.features[11:20], component="dynamic")
      dlm4.fitForwardFilter()
  
      # we feed the data to dlm5 all at once
      dlm5 = dlm(self.data)
      dlm5 + self.trend1 + dynamic(features=self.features, discount=1)
      dlm5.fitForwardFilter()
      self.assertAlmostEqual(
          np.sum(
              np.array(dlm4.result.filteredObs)
              - np.array(dlm5.result.filteredObs)
          ),
          0.0,
      )
  
imports: import numpy
  import unittest
  from pydlm.modeler.trends import trend
  from pydlm.modeler.seasonality import seasonality
  from pydlm.modeler.dynamic import dynamic
  from pydlm.modeler.autoReg import autoReg
  from pydlm.dlm import dlm
label_desc: Use image node_id 7 for calling the testDlm obj's underlying member method code with example usage: obj.testAppendDynamic() without return types