code: def set_src_lengths(self, src_lengths):
      self.src_lengths = src_lengths
  
imports: from typing import Dict, Optional
  import torch
  import torch.nn
  from torch import Tensor
label_desc: Use image node_id 3 for calling the MultichannelSearch obj's underlying member method code with example usage: obj.set_src_lengths(src_lengths) without return types