public static string GetPracticeDetailsHashParametersString() { var parameters = new HashParameters(); parameters.AddAreaCode(AreaCodes.GpPracticeThatchedHouseMedicalCentre); parameters.AddParentAreaCode(AreaCodes.CcgWalthamForest); parameters.AddParentAreaTypeId(AreaTypeIds.CCG); parameters.AddAreaTypeId(AreaTypeIds.CCG); return parameters.HashParameterString; }