code: func WithConfigCenterSource(cci ConfigCenterInfo, c config.Client) Option {
  	return func(options *Options) {
  		options.ConfigCenterInfo = cci
  		options.ConfigClient = c
  	}
  }
docs: //WithConfigCenterSource accept the information for initiating a config center source,
  //ConfigCenterInfo is required if you want to use config center source
  //client is optional,if client is nil, archaius will create one based on ConfigCenterInfo
  //config client will be injected into config source as a client to interact with a config server