Unmounts a mount. This is an asynchronous operation, and is finished by calling g_mount_unmount_with_operation_finish() with the mount and GAsyncResult data returned in the callback.
flags affecting the operation
a gtk.MountOperation or NULL to avoid user interaction.
optional gio.Cancellable object, NULL to ignore.
a GAsyncReadyCallback, or NULL.
user data passed to callback.
2.22
Unmounts a mount. This is an asynchronous operation, and is finished by calling g_mount_unmount_with_operation_finish() with the mount and GAsyncResult data returned in the callback.