# MyApp.pm package MyApp; use strict; use warnings; use HTTP::Engine::Response; sub run { my ($class, $request) = @_; my $response = HTTP::Engine::Response->new; $response->body("Hello World"); $response->status(200); return $response; } 1; The run method here takes an instance of HTTP::Engine::Request as its input, and returns an HTTP::Engine::Response object as its output. This sub-routine is th