code: def register_category(self, category_id, label):
      if category_id in self.mapping:
          return category_id
  
      self.mapping[category_id] = OptionsCategory(category_id, label)
  
imports: import json
  import sys
  from dataclasses import dataclass
  import gradio
  from modules import errors
  from modules.shared_cmd_options import cmd_opts
label_desc: Use image node_id 2 for calling the OptionsCategories obj's underlying member method code with example usage: obj.register_category(category_id, label) and returns: category_id