code: def _parsed_cmd(self):
          
          if len(self.args.command) < 2:
              return " ".join(self.args.command)
  
          return " ".join(self._quote_argument(arg) for arg in self.args.command)
docs: We need to take into account two cases:
  
          - ['python code.py foo bar']: Used mainly with dvc as a library
          - ['echo', 'foo bar']: List of arguments received from the CLI
  
          The second case would need quoting, as it was passed through:
                  dvc run echo "foo bar"