+/**
+ * @ingroup G_modifying_wims
+ *
+ * Add the file or directory tree at @p fs_source_path on the filesystem to the
+ * location @p wim_target_path within the specified @p image of the @p wim.
+ *
+ * This just builds an appropriate ::wimlib_add_command and passes it to
+ * wimlib_update_image().
+ */
+extern int
+wimlib_add_tree(WIMStruct *wim, int image,
+ const wimlib_tchar *fs_source_path,
+ const wimlib_tchar *wim_target_path, int add_flags);
+