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: rubygems.rb
    path of file: ./repos/gel/vendor/pub_grub/lib/pub_grub
    
    the code of the file until where you have to start completion: module Gel::Vendor::PubGrub
  module RubyGems
    extend self

    def requirement_to_range(requireme
    
    def requirement_to_range(requirement)
      ranges = requirement.requirements.map do |(op, ver)|
        case op
        when "~>"
          name = "~> #{ver}"
          bump = ver.class.new(ver.bump.to_s + ".A")
          VersionRange.new(name: name, min: ver, max: bump, include_min: true)
        when ">"
          VersionRange.new(min: ver)
        when ">="
          VersionRange.new(min: ver, include_min: true)
        when "<"
          VersionRange.new(max: ver)
        when "<="
          VersionRange.new(max: ver, include_max: true)
        when "="
          VersionRange.new(min: ver, max: ver, include_min: true, include_max: true)
        when "!="
          VersionRange.new(min: ver, max: ver, include_min: true, include_max: true).invert
        else
          raise "bad version specifier: #{op}"
        end
      end