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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _generic_format(self, raid_config, controller=None):
 """Convert redfish data of current raid config to generic format. :param raid_config: Raid configuration dictionary :param controller: Array controller model in post_create read else None :returns: current raid config. """

        logical_drives = raid_config["LogicalDrives"]
        logical_disks = []
        controller = controller
        for ld in logical_drives:
            prop = {'size_gb': ld['CapacityGiB'],
                    'raid_level': ld['Raid'].strip('Raid'),
                    'root_device_hint': {
                        'wwn': '0x' + ld['VolumeUniqueIdentifier']},
                    'controller': controller,
                    'physical_disks': ld['DataDrives'],
                    'volume_name': ld['LogicalDriveName']}
            logical_disks.append(prop)
        return logical_disks