anchor.diff:              'Verify that all connected devices have been paired with this computer in Xcode.\n'
               'If all devices have been paired, libimobiledevice and ideviceinstaller may require updating.\n'
               'To update, run:\n'
  +            '  brew update\n'
               '  brew uninstall --ignore-dependencies libimobiledevice\n'
  +            '  brew uninstall --ignore-dependencies usbmuxd\n'
  +            '  brew install --HEAD usbmuxd\n'
  +            '  brew unlink usbmuxd\n'
  +            '  brew link usbmuxd\n'
               '  brew install --HEAD libimobiledevice\n'
               '  brew install ideviceinstaller'
           ));
  
positive.code:         brewStatus = ValidationType.partial;
          messages.add(ValidationMessage.error(
              'libimobiledevice and ideviceinstaller are not installed. To install, run:\n'
              '  brew install --HEAD libimobiledevice\n'
              '  brew install ideviceinstaller'
          ));
  
negative.code:         messages.add(ValidationMessage.error(
            'ideviceinstaller is not installed; this is used to discover connected iOS devices.\n'
            'To install, run:\n'
            '  brew install --HEAD usbmuxd\n'
            '  brew link usbmuxd\n'
            '  brew install --HEAD libimobiledevice\n'
            '  brew install ideviceinstaller'
          ));
  