code: def append_doc_link(help_message, path):
      from dvc.utils import format_link
  
      if not path:
          return help_message
      doc_base = "https://man.dvc.org/"
      return f"{help_message}\nDocumentation: {format_link(doc_base + path)}"
  
imports: import argparse
label_desc: Use image node_id 1 for calling a global function with example usage: append_doc_link(help_message, path) and returns: help_message, str, format_link, help_message