import { MainCommand } from "https://deno.land/x/line@v1.0.1/src/main_command.ts";
This method is to be implemented by the user of this framework. This method
is executed during runtime and should contain the code that this main
command should process. For example, if this main command should log things
to the console, then this method could have console.log( ... )
in its
body.