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: suggestions_parser.rb
    path of file: ./repos/gitlabhq/lib/gitlab/diff
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Gitlab
  module Diff
    class SuggestionsParser
      # Matches for instance "-1", "+1" or "-1+2".
      SUGGESTION_CONTEXT = /^(\-(?<above>\d+))?(\+(?<below>\d+))?$/

      CSS   = 'pre.language-suggestion'
      XPATH = Gitlab::Utils::Nokogiri.css_to_xpath(CSS).freeze

      class << self
        # Returns an array of Gitlab::Diff::Suggestion which represent
    
        def parse(text, position:, project:, supports_suggestion: true)
          return [] unless position.complete?

          html = Banzai.render(text, project: nil,
                                     no_original_data: true,
                                     suggestions_filter_enabled: supports_suggestion)
          doc = Nokogiri::HTML(html)
          suggestion_nodes = doc.xpath(XPATH)

          return [] if suggestion_nodes.empty?

          diff_file = position.diff_file(project.repository)

          suggestion_nodes.map do |node|
            lang_param = node['data-lang-params']

            lines_above, lines_below = nil

            if lang_param && suggestion_params = fetch_suggestion_params(lang_param)
              lines_above = suggestion_params[:above]
              lines_below = suggestion_params[:below]
            end

            Gitlab::Diff::Suggestion.new(node.text,
                                         line: position.new_line,
                                         above: lines_above.to_i,
                                         below: lines_below.to_i,
                                         diff_file: diff_file)
          end
        end