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: signups.rb
    path of file: ./repos/discourse/app/models/concerns/reports
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Reports::Signups
  extend
    
    def report_signups(report)
      report.icon = "user-plus"

      group_filter = report.filters.dig(:group)
      report.add_filter("group", type: "group", default: group_filter)

      if group_filter
        basic_report_about report,
                           User.real,
                           :count_by_signup_date,
                           report.start_date,
                           report.end_date,
                           group_filter
        add_counts report, User.real, "users.created_at"
      else
        report_about report, User.real, :count_by_signup_date
      end