at_with_coercion

# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 45
    def at_with_coercion(*args)
      return at_without_coercion(*args) if args.size != 1

      # Time.at can be called with a time or numerical value
      time_or_number = args.first

      if time_or_number.is_a?(ActiveSupport::TimeWithZone)
        at_without_coercion(time_or_number.to_r).getlocal
      elsif time_or_number.is_a?(DateTime)
        at_without_coercion(time_or_number.to_f).getlocal
      else
        at_without_coercion(time_or_number)
      end
    end