Here is a list of all documented files with brief descriptions:

storage
Actions
Base.h
Create.h
Delete.h
Modify.h
Devices
Bcache.h
BcacheCset.h
BitlockerV2.h
BlkDevice.h
Dasd.h
DasdPt.h
Device.h
Disk.h
DmRaid.h
Encryption.h
Gpt.h
ImplicitPt.h
Luks.h
LvmLv.h
LvmPv.h
LvmVg.h
Md.h
MdContainer.h
MdMember.h
Msdos.h
Multipath.h
Partition.h
Partitionable.h
PartitionTable.h
PlainEncryption.h
StrayBlkDevice.h
Filesystems
Bcachefs.h
Bitlocker.h
BlkFilesystem.h
Btrfs.h
BtrfsQgroup.h
BtrfsSubvolume.h
Erofs.h
Exfat.h
Ext.h
Ext2.h
Ext3.h
Ext4.h
F2fs.h
Filesystem.h
Iso9660.h
Jfs.h
Mountable.h
MountPoint.h
Nfs.h
Nilfs2.h
Ntfs.h
Reiserfs.h
Squashfs.h
Swap.h
Tmpfs.h
Udf.h
Vfat.h
Xfs.h
Holders
BtrfsQgroupRelation.h
FilesystemUser.h
Holder.h
MdSubdevice.h
MdUser.h
Snapshot.h
Subdevice.h
User.h
SystemInfo
Arch.h
SystemInfo.h
Utils
Alignment.h
Callbacks.h
Exception.h
HumanString.h
LightProbe.h
Lock.h
Logger.h
Region.h
Remote.h
Swig.h
Topology.h
Actiongraph.h
CommitOptions.h
CompoundAction.h
Devicegraph.h
Environment.h
FreeInfo.h
Graphviz.h
LvmDevicesFile.h
Pool.h
SimpleEtcCrypttab.h
SimpleEtcFstab.h
Storage.h
UsedFeatures.h
Version.h
View.h