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: builtin_engine.rb
    path of file: ./repos/passenger/src/ruby_supportlib/phusion_passenger/standalone/start_command
    
    the code of the file until where you have to start completion: # encoding: utf-8
#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2014-2018 Phusion Holding B.V.
#
# 
    
        def start_engine_no_create
          begin
            @engine.start
          rescue DaemonController::AlreadyStarted
            begin
              pid = @engine.pid
            rescue SystemCallError, IOError
              pid = nil
            end