<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def add_role_type_info(self, role_type, config):
 """ Add a role type setup info. @param role_type: Role type @param config: A dictionary of role type configuration """

    rt_config = config_to_api_list(config)
    rt_config['roleType'] = role_type

    if self.config is None:
      self.config = { }
    if not self.config.has_key(ROLETYPES_CFG_KEY):
      self.config[ROLETYPES_CFG_KEY] = [ ]
    self.config[ROLETYPES_CFG_KEY].append(rt_config)