SearchBase constructor Null safety

SearchBase(
  1. String index,
  2. String url,
  3. String credentials,
  4. {AppbaseSettings? appbaseConfig,
  5. TransformRequest? transformRequest,
  6. TransformResponse? transformResponse,
  7. Map<String, String>? headers}
)

Implementation

SearchBase(String index, String url, String credentials,
    {AppbaseSettings? appbaseConfig,
    TransformRequest? transformRequest,
    TransformResponse? transformResponse,
    Map<String, String>? headers})
    : super(index, url, credentials,
          appbaseConfig: appbaseConfig,
          transformRequest: transformRequest,
          transformResponse: transformResponse,
          headers: headers) {
  this._searchWidgets = {};
}