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: site_github_munger.rb
    path of file: ./repos/github-metadata/lib/jekyll-github-metadata
    
    the code of the file until where you have to start completion: require "jekyll"
require "uri"

module Jekyll
  module GitHubMetadata
    
    
      def github_namespace
        case @original_config
        when nil
          drop
        when Hash
          drop.merge(@original_config)
        else
          @original_config
        end