code: def setup(app):
      app.connect("builder-inited", setup_link_role)
      return {"version": "0.1", "parallel_read_safe": True}
  
imports: from docutils import nodes, utils
  from sphinx.util.nodes import split_explicit_title
label_desc: Use image node_id 4 for calling a global function with example usage: setup(app) and returns: dict