/// <summary>Returns for each row: 0) fetchCode, 1) name in API, 2) currency, 3) region, 4) type.</summary>
/// <exception cref="Exception" />
public async Task <string[][]> Search(string keywords, string apiLicenseKey) => (
Parse(await retriever.Load(GetUrl(keywords, apiLicenseKey)))
).Filter("symbol", "name", "currency", "region", "type");
