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: filters.rb
    path of file: ./repos/jekyll/lib/jekyll
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require_all "jekyll/filters"

module Jekyll
  module Filters
    include URLFilters
    include GroupingFilters
    include DateFilters

    # Convert a Markdown string into HTML output.
    #
    # input - The Markdown String to convert.
    #
    # Returns the HTML formatted String.
    def markdownify(input)
      @context.registers[
    
    def as_liquid(item)
      case item
      when Hash
        item.each_with_object({}) { |(k, v), result| result[as_liquid(k)] = as_liquid(v) }
      when Array
        item.map { |i| as_liquid(i) }
      else
        if item.respond_to?(:to_liquid)
          liquidated = item.to_liquid
          # prevent infinite recursion for simple types (which return `self`)
          if liquidated == item
            item
          else
            as_liquid(liquidated)
          end