appendToFinish
Finishes an asynchronous file append operation started with g_file_append_to_async().
Return
a valid #GFileOutputStream or null on error. Free the returned object with g_object_unref().
Parameters
res
#GAsyncResult
Finishes an asynchronous file append operation started with g_file_append_to_async().
a valid #GFileOutputStream or null on error. Free the returned object with g_object_unref().
#GAsyncResult