def get_feature_info(self, wherex, wherey, layers, callback, format, feature_count, srs, filter):
        raise NotImplementedError("Must implement get_feature_info to avoid being abstract")
**REQUIRED** Get a formatted feature_info document that can be returned by GetFeatureInfo.
dataset/ETHPy150Open hydroshare/hydroshare2/ga_ows/views/wms/base.py/WMSAdapterBase.get_feature_info