code: def get_classifier(self):
      return self.head
  
imports: import math
  from functools import partial
  import paddle
  import paddle.nn
  import paddle.nn.functional
  import paddle.nn.initializer
  from paddleseg.cvlibs import manager
  from paddleseg.utils import utils
  from paddleseg.models.backbones.transformer_utils import *
label_desc: Use image node_id 6 for calling the MixVisionTransformer obj's underlying member method code with example usage: obj.get_classifier() and returns: self