# File lib/ec2/ec2.rb, line 260
    def describe_images_by_executable_by(list=['self'], image_type=nil)
      list      = list.to_a
      cache_for = list==['self'] && !image_type ? :describe_images_by_executable_by : nil
      ec2_describe_images({'ExecutableBy' => list}, image_type, cache_for)
    end