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: ical_builder.rb
    path of file: ./repos/ice_cube/lib/ice_cube/builders
    
    the code of the file until where you have to start completion: module IceCube
  class IcalBuilder
    ICAL_DAYS = ["SU", "MO", "TU", "WE", "TH", "FR", "SA"]

    d
    
    def self.ical_format(time, force_utc)
      time = time.dup.utc if force_utc
      if time.utc?
        ":#{IceCube::I18n.l(time, format: "%Y%m%dT%H%M%SZ")}" # utc time
      else
        ";TZID=#{IceCube::I18n.l(time, format: "%Z:%Y%m%dT%H%M%S")}" # local time specified
      end