code: def __init__(self, ui, tabname, page):
      super().__init__(ui, tabname, page)
  
      self.select_vae = None
  
file_path: stable-diffusion-webui/modules/ui_extra_networks_checkpoints_user_metadata.py
imports: import gradio
  from modules import ui_extra_networks_user_metadata, sd_vae, shared
  from modules.ui_common import create_refresh_button
label_desc: Use image node_id 1 to create a new CheckpointUserMetadataEditor object from inherited base classes: ui_extra_networks_user_metadata with example: obj = CheckpointUserMetadataEditor(ui, tabname, page)