RIC-642 related changes: REST subscription, rnib enhancements, symptomdata, rest service with healthy and config interface

Signed-off-by: Erkki Hietala <erkki.hietala@nokia.com>
Change-Id: Ibcbc85b57da571fb9c0eb3adff9ba950aec6c4c9
diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 8189ab4..0f2bbdf 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -49,3 +49,27 @@
 
 .. autoclass:: ricxappframe.xapp_sdl.SDLWrapper
     :members:
+
+Class Symptomdata
+-----------------
+
+Application writers may instantiate this class directly to communicate with the symptomdata service.
+
+.. autoclass:: ricxappframe.xapp_symptomdata.Symptomdata
+    :members:
+
+Class NewSubscriber
+-------------------
+
+Application writers may instantiate this class directly to communicate REST based subscriptions.
+
+.. autoclass:: ricxappframe.xapp_subscribe.NewSubscriber
+    :members:
+
+Class RestHandler
+-----------------
+
+Application writers may instantiate this class directly to have the xapp REST server service.
+
+.. autoclass:: ricxappframe.xapp_rest.RestHandler
+    :members: