code: def find_first_conv_layer(model, layer_type, in_channels):
      for _, module in model.named_modules():
          if (
              isinstance(module, layer_type)
              and module.in_channels == in_channels
          ):
              return module
  
imports: import inspect
  import pytest
  import torch
  import torch.nn
  import torch.nn.functional
  import torchvision.models
  from flashtorch.saliency import Backprop
label_desc: Use image node_id 1 for calling a global function with example usage: find_first_conv_layer(model, layer_type, in_channels) and returns: module