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

module JekyllAdmin
  # 
    
    def front_matter
      return unless file_exists?

      @front_matter ||= if file_contents =~ Jekyll::Document::YAML_FRONT_MATTER_REGEXP
                          SafeYAML.load(Regexp.last_match(1))
                        else
                          {}
                        end