class_docstr: FeatureExtractor of FAN (http://openaccess.thecvf.com/content_ICCV_2017/papers/Cheng_Focusing_Attention_Towards_ICCV_2017_paper.pdf) 
class_docstr_tok: ["FeatureExtractor","of","FAN","(","http",":","\/\/openaccess.thecvf.com\/content_ICCV_2017\/papers\/Cheng_Focusing_Attention_Towards_ICCV_2017_paper.pdf",")"]
code: def __init__(self, input_channel, output_channel=512):
      super(ResNet_FeatureExtractor, self).__init__()
      self.ConvNet = ResNet(
          input_channel, output_channel, BasicBlock, [1, 2, 5, 3]
      )
  
imports: import torch
  import torch.nn
  import torch.nn.init
  import torchvision
  from torchvision import models
  from collections import namedtuple
  from packaging import version
label_desc: Use image node_id 1 to create a new ResNet_FeatureExtractor object from inherited base classes: nn with example: obj = ResNet_FeatureExtractor(input_channel, output_channel)