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: engine.rb
    path of file: ./repos/dawnscanner/lib/dawn
    
    the code of the file until where you have to start completion: require 'net/http'
require 'json'
require 'socket'
require 'fileutils'
# Statistics stuff
# require 'code_metrics/statistics'

module Dawn
  module Engine

    attr_reader :target
    attr_reader :name
    attr_reader :scan_start
    attr_reader :scan_stop
    # This attribute is used when @name == "Gemfile.lock" to force the
    # loading of specific MVC checks
    attr_reader :force
    attr_reader :gemfile_lock
    attr_reader :mvc_version
    attr_r
    
    def apply(name)

      # FIXME.20140325
      # Now if no checks are loaded because knowledge base was not previously called, apply and apply_all proudly refuse to run.
      # Reason is simple, load_knowledge_base now needs enabled check array
      # and I don't want to pollute engine API to propagate this value. It's
      # a param to load_knowledge_base and then bin/dawn calls it
      # accordingly.
      # load_knowledge_base if @checks.nil?
      if @checks.nil?
        $logger.err "you must load knowledge base before trying to apply security checks"
        return false
      end

      return false if @checks.empty?

      @checks.each do |check|
        _do_apply(check) if check.name == name
      end

      false
    end