code: def fill_qmap(self):
      self.name2qmap["dynamic"] = F.create_dynamic_map(signed=True)
      self.name2qmap["udynamic"] = F.create_dynamic_map(signed=False)
  
imports: from collections import abc
  from collections import defaultdict
  from copy import deepcopy
  from itertools import chain
  import torch
  import bitsandbytes.functional
label_desc: Use image node_id 2 for calling the Optimizer8bit obj's underlying member method code with example usage: obj.fill_qmap() without return types