    # File lib/rack/multipart/uploaded_file.rb, line 10
          def initialize(path, content_type = "text/plain", binary = false)
            raise "#{path} file does not exist" unless ::File.exist?(path)
            @content_type = content_type
            @original_filename = ::File.basename(path)
            @tempfile = Tempfile.new([@original_filename, ::File.extname(path)])
            @tempfile.set_encoding(Encoding::BINARY) if @tempfile.respond_to?(:set_encoding)
            @tempfile.binmode if binary
            FileUtils.copy_file(path, @tempfile.path)
          end