code: def begin_state(self, batch_size: int) -> Tuple[Tensor, Tensor]:
      return self.rnn_cell.begin_state(batch_size=batch_size)
  
imports: from typing import Optional, Tuple
  import mxnet
  from gluonts.core.component import validated
  from gluonts.mx import Tensor
  from gluonts.mx.distribution import Distribution, DistributionOutput
  from gluonts.mx.distribution.distribution import getF
  from mxnet import gluon
label_desc: Use image node_id 2 for calling the DeepRenewalNetwork obj's underlying member method code with example usage: obj.begin_state(batch_size) and returns: self