boxen::osx_defaults doesn't allow an empty string value about puppet-boxen HOT 3 CLOSED

class kud::security {
  boxen::osx_defaults { 'FIX: short delay for password dialog on screensaver':
    ensure => present,
    domain => 'com.apple.screensaver',
    key => 'askForPasswordDelay',
    value => 0,
    user => $::boxen_user
  }
}

Notice: /Stage[main]/Kud::Security/Boxen::Osx_defaults[FIX: short delay for password dialog on screensaver]/Exec[osx_defaults write  com.apple.screensaver:askForPasswordDelay=>0]/returns: executed successfully
Notice: /Stage[main]/Boxen::Security/Boxen::Osx_defaults[short delay for password dialog on screensaver]/Exec[osx_defaults write  com.apple.screensaver:askForPasswordDelay=>5]/returns: executed successfully