class_docstr: FastSEResNet 
class_docstr_tok: ["FastSEResNet"]
code: def stages(self):
      return [self.layer1, self.layer2, self.layer3, self.layer4]
  
imports: import math
  import os
  import mxnet
  from mxnet import initializer
  from mxnet.gluon import nn
  from mxnet.gluon.block import HybridBlock
  from .utils import ZeroUniform, _try_load_parameters
label_desc: Use image node_id 3 for calling the FastSEResNet obj's underlying member method code with example usage: obj.stages() and returns: list