code: def __call__(
      self,
      src_ids,
      encoder_input_mask,
      decoder_input_ids=None,
      return_beam_scores=False,
  ):
      with self.as_frozen():
          return self._forward(
              src_ids,
              encoder_input_mask,
              decoder_input_ids,
              return_beam_scores,
          )
  
imports: from contextlib import contextmanager
  import torch
  from nemo.collections.common.parts import NEG_INF, mask_padded_tokens
label_desc: Use image node_id 9 for calling the EnsembleBeamSearchSequenceGenerator obj's underlying member method code with example usage: obj.__call__(src_ids, encoder_input_mask, decoder_input_ids, return_beam_scores) and returns: self