@staticmethod
def convert_list_to_string(list_tmp, separator=','):
    """
        Convert list to string
        :param list_tmp:
        :param separator:
        :return:
        Ex: list_str=['1','2','3','4','5']
          => return '1,2,3,4,5'
        """
    result_str = list_tmp
    if isinstance(list_tmp, list):
        result_str = str(separator.join(list_tmp))
    return result_str
