code: def output_size(self) -> int:
      return len(self.frontends) * self.proj_dim
  
file_path: espnet/espnet2/asr/frontend/fused.py
imports: from typing import Tuple
  import numpy
  import torch
  from typeguard import check_argument_types
  from espnet2.asr.frontend.abs_frontend import AbsFrontend
  from espnet2.asr.frontend.default import DefaultFrontend
  from espnet2.asr.frontend.s3prl import S3prlFrontend
label_desc: Use image node_id 2 for calling the FusedFrontends obj's underlying member method code with example usage: obj.output_size() and returns: unknown