You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: app.rb
    path of file: ./repos/fluentd/lib/fluent/plugin_helper/http_server
    
    the code of the file until where you have to start completion: #
# Fluentd
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obta
    
        def call(request)
          method = request.method
          resp =
            case method
            when HttpServer::Methods::GET
              get(request)
            when HttpServer::Methods::HEAD
              head(request)
            when HttpServer::Methods::POST
              post(request)
            when HttpServer::Methods::PATCH
              patch(request)
            when HttpServer::Methods::PUT
              put(request)
            when HttpServer::Methods::DELETE
              delete(request)
            when HttpServer::Methods::OPTIONS
              options(request)
            when HttpServer::Methods::CONNECT
              connect(request)
            when HttpServer::Methods::TRACE
              trace(request)
            else
              raise "Unknown method #{method}"
            end