create method
Create a new instance of the type of this manager.
Implementers should ensure this method updates the cache.
Implementation
@override
Future<ApplicationCommand> create(ApplicationCommandBuilder builder) async {
final route = HttpRoute()..applications(id: applicationId.toString());
if (_guildId != null) route.guilds(id: _guildId!.toString());
route.commands();
final request = BasicRequest(route, method: 'POST', body: jsonEncode(builder.build()));
final response = await client.httpHandler.executeSafe(request);
final command = parse(response.jsonBody as Map<String, Object?>);
client.updateCacheWith(command);
return command;
}