updated(date_or_time = nil)
public
Accepts a Date or Time
object and inserts it in the proper format. If nil is passed,
current time in UTC is used.
# File actionview/lib/action_view/helpers/atom_feed_helper.rb, line 169
def updated(date_or_time = nil)
@xml.updated((date_or_time || Time.now.utc).xmlschema)
end