code: def _call_vagrant_command(self, args):
          '''
          Run a vagrant command.  Return None.
          args: A sequence of arguments to a vagrant command line.
  
          '''
          # Make subprocess command
          command = self._make_vagrant_command(args)
          with self.out_cm() as out_fh, self.err_cm() as err_fh:
              subprocess.check_call(command, cwd=self.root, stdout=out_fh,
                                    stderr=err_fh, env=self.envf _call_vagrant_command(self, args):
          '''
          Run a vagrant command.  Return None.
          args: A sequence of arguments to a vagrant command line.
  
          '''
          # Make subprocess command
          command = self._make_vagrant_command(args)
          with self.out_cm() as out_fh, self.err_cm() as err_fh:
              subprocess.check_call(command, cwd=self.root, stdout=out_fh,
                                    stderr=err_fh, env=self.env)
docs: Run a vagrant command.  Return None.
          args: A sequence of arguments to a vagrant command line.