code: def banner(color: ColorFunction, msg: str) -> str:
      """"""
      section = "=" * 80
      header = f"{msg:^80}"
      return f"\n{section}\n{header}\n{section}\n"
  
file_path: bokeh/release/ui.py
imports: from __future__ import annotations
  import sys
  from typing import Callable, Sequence
label_desc: Use image node_id 1 for calling a global function with example usage: banner(color, msg) and returns: str, section, str, header, str, section, str