code: def _copied_file_for_output(line):
      assert line.startswith("Copying "), line
      return line[8:]
  
file_path: guildai/guild/commands/api_merge.py
imports: import os
  import click
  from guild import click_util
  from guild import util
  from .None import api_support
  from .None import runs_merge
label_desc: Use image node_id 6 for calling a global function with example usage: _copied_file_for_output(line) and returns: line