def has_device_file_by_label(self) -> bool:
"""
Check whether the device has a /dev/disk/by-label/xxx device path.
:return: Returns `True` if a disk/by-label device path exists,
otherwise `False`.
:rtype: bool
"""
return is_device_file_by_label(self.device_file_by_label)
def device_file_by_label(self) -> Optional[str]:
"""
Get the device file, e.g.
* /dev/disk/by-label/DATA
* /dev/disk/by-label/My\x20Passport\x20Blue
:return: Returns the escaped device file if available,
otherwise `None`.
:rtype: str | None
"""
for device_link in self.device_links:
if is_device_file_by_label(device_link):
return device_link
return None