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: go_dep.rb
    path of file: ./repos/LicenseFinder/lib/license_finder/package_managers
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'json'

module LicenseFinder
  class GoDep < PackageManager
    OLD_GODEP_VENDOR_PATH = 'Godeps/_workspace/src'
    GODEP_VENDOR_PATH = 'vendor'

    def initialize(options = {})
      super
      @full_version = options[:go_full_version]
    end

    def current_packages
      packages_from_json(detected_package_path.read)
      # godep includes subpackages as a seperate dependency, we can de-dup that
    end

    def self.takes_priority_over
      Go15VendorExperiment
    end

    def possible_package_paths
      [project_path.join('Godeps/Godeps.json')]
    end

    def package_management_command
      'godep'
    end

    private

    def install_prefix
      @install_prefix ||= if project_path.join(OLD_GODEP_VENDOR_PATH).directory?
                            project_path.join(OLD_GODEP_VENDOR_PATH)
                          elsif project_path.join(GODEP_
    
    def packages_from_json(json_string)
      all_packages = JSON.parse(json_string)['Deps']

      return [] unless all_packages

      packages_grouped_by_revision = all_packages.group_by { |package| package['Rev'] }
      result = []

      packages_grouped_by_revision.each_value do |packages_in_group|
        all_paths_in_group = packages_in_group.map { |p| p['ImportPath'] }
        common_paths = CommonPathHelper.longest_common_paths(all_paths_in_group)
        package_info = packages_in_group.first

        common_paths.each do |common_path|
          dependency_info_hash = {
            'Homepage' => common_path,
            'ImportPath' => common_path,
            'InstallPath' => package_info['InstallPath'],
            'Rev' => package_info['Rev']
          }

          result << GoPackage.from_dependency(dependency_info_hash,
                                              install_prefix,
                                              @full_version)
        end
      end
      result
    end