# File lib/standard/facets/gem/specification/find_requireable_file.rb, line 5
    def find_requireable_file(file)
      root = full_gem_path

      require_paths.each do |lib|
        base = File.join(root, lib, file)
        Gem.suffixes.each do |suf|
          path = "#{base}#{suf}"
          return path if File.file? path
        end
      end

      return nil
    end