code: def parallel_channels(self):
      return max(
          [
              b.parallel_channels
              if isinstance(b, AdapterCompositionBlock)
              else 1
              for b in self.children
          ]
      )
  
imports: import itertools
  from collections.abc import Sequence
  from typing import List, Optional, Set, Tuple, Union
  import torch
label_desc: Use image node_id 8 for calling the AdapterCompositionBlock obj's underlying member method code with example usage: obj.parallel_channels() and returns: max