class Hackmac::ContainerDisk

def initialize(disk:, limiter: nil) 

def initialize(disk:, limiter: nil)
  @disk = disk
  device = `#{Shellwords.join(%w[ diskutil list ] << disk)}`.
    lines.grep(/Apple_APFS/).first&.split(/\s+/)&.[](4)
  super device: device, limiter: limiter
end