code: def append_css(self, stylesheet):
      self._resources.append_resource(stylesheet)
  
file_path: dash/dash/resources.py
imports: import json
  import warnings
  import os
  from .development.base_component import ComponentRegistry
  from .None import exceptions
label_desc: Use image node_id 2 for calling the Css obj's underlying member method code with example usage: obj.append_css(stylesheet) without return types