code: def testDynamicDecodeRNNWithTrainingHelperMatchesDynamicRNNNoSeqLen(
      self,
  ):
      self._testDynamicDecodeRNNWithTrainingHelperMatchesDynamicRNN(
          use_sequence_length=False
      )
  
imports: from magenta.contrib import seq2seq
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 8 for calling the DynamicDecodeRNNTest obj's underlying member method code with example usage: obj.testDynamicDecodeRNNWithTrainingHelperMatchesDynamicRNNNoSeqLen() without return types