How to use the jsonargparse.ActionPath._check_type function in jsonargparse

raise TypeError('Problems reading path list: '+path_list_file)
                cwd = os.getcwd()
                if self._rel == 'list' and path_list_file != '-':
                    os.chdir(os.path.abspath(os.path.join(path_list_file, os.pardir)))
                try:
                    for num, val in enumerate(path_list):
                        try:
                            path_list[num] = Path(val, mode=self._mode)
                        except TypeError as ex:
                            raise TypeError('Path number '+str(num+1)+' in list '+path_list_file+', '+str(ex))
                finally:
                    os.chdir(cwd)
                value += path_list
            return value
        else:
            return ActionPath._check_type(self, value, islist=True)