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: drb.rb
    path of file: ./repos/truffleruby/lib/mri/drb
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
#
# = drb/drb.rb
#
# Distributed Ruby: _dRuby_ version 2.0
    
    def uri_option(uri, config, first=true)
      @protocol.each do |prot|
        begin
          uri, opt = prot.uri_option(uri, config)
          # opt = nil if opt == ''
          return uri, opt
        rescue DRbBadScheme
        end
      end