+/** This function is equivalent to wimlib_add_image() except it allows for
+ * multiple sources to be combined into a single WIM image. This is done by
+ * specifying the @a sources and @a num_sources parameters instead of the @a
+ * source parameter. The rest of the parameters are the same as
+ * wimlib_add_image(). See the documentation for <b>imagex capture</b> for full
+ * details on how this mode works. */
+extern int wimlib_add_image_multisource(WIMStruct *w,
+ struct wimlib_capture_source *sources,
+ size_t num_sources,
+ const char *name,
+ const char *config_str,
+ size_t config_len,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func);
+