code: def run(self):
      for target in self.args.targets:
          try:
              self.repo.unprotect(target)
          except DvcException:
              msg = f"failed to unprotect '{target}'"
              logger.exception(msg)
              return 1
      return 0
  
file_path: dvc/dvc/commands/unprotect.py
imports: from dvc.cli import completion, formatter
  from dvc.cli.command import CmdBase
  from dvc.cli.utils import append_doc_link
  from dvc.exceptions import DvcException
  from dvc.log import logger
label_desc: Use image node_id 1 for calling the CmdUnprotect obj's underlying member method code with example usage: obj.run() and returns: int, int