API Not official for edge extensions.
$ dotnet add package EdgeExtensionsApiusing EdgeExtensionsApi;
var suggestions = await Extensions.GetSuggestions("pdf");
var searchResults = await Extensions.Search("pdf");
var extensionDetail = await Extensions.GetExtensionDetail("eeagobfjdenkkddmbclomhiblgggliao");
Note: All functions do not accept null values or an empty string, in which case an error will simply be returned.