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: type.rb
    path of file: ./repos/ruby-mime-types/lib/mime
    
    the code of the file until where you have to start completion: # frozen_string_literal: tru
    
    def match(content_type)
      case content_type
      when MatchData
        content_type
      else
        MEDIA_TYPE_RE.match(content_type)
      end