This call should fetch the source for ietf-yang-types YANG model from
the mounted device.
+Receving Netconf Device Notifications on a http client
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Devices emit netconf alarms and notifictions on certain situtations, which can demand
+attention from Device Administration. The notifications are received as Netconf messages on an
+active Netconf session.
+
+Opendaylight provides the way to stream the device notifications over a http session.
+
+- Step 1: Mount the device (assume node name is test_device)
+
+- Step 2: Wait for the device to be connected.
+
+- Step 3: Create the Subscription for notification on the active session.
+
+ .. code-block::
+
+ POST
+ http://localhost:8181/rests/operations/network-topology:network-topology/topology=topology-netconf/node=test_device/yang-ext:mount/notifications:create-subscription
+ Content-Type: application/json
+ Accept: application/json
+
+ .. code-block:: json
+
+ {
+ "input": {
+ "stream": "NETCONF"
+ }
+ }
+
+- Step 4: Create the http Stream for the events.
+
+.. code-block::
+
+ POST
+ http://localhost:8181/rests/operations/odl-device-notification:subscribe-device-notification
+ Content-Type: application/json
+ Accept: application/json
+
+.. code-block:: json
+
+ {
+ "input": {
+ "path":"/network-topology:network-topology/topology[topology-id='topology-netconf']/node[node-id='test_device']"
+ }
+ }
+
+The response suggests the http url for reading the notifications.
+
+.. code-block:: json
+
+ {
+ "odl-device-notification:output": {
+ "stream-path": "http://localhost:8181/rests/notif/test_device?notificationType=test_device"
+ }
+ }
+
+- Step 5: User can access the url in the response and the notifications will be as follows.
+
+.. code-block::
+
+ GET
+ http://localhost:8181/rests/notif/test_device?notificationType=test_device
+ Content-Type: application/xml
+ Accept: application/xml
+
+
+.. code-block:: xml
+
+ : ping
+
+ : ping
+
+ : ping
+
+ : ping
+
+ : ping
+
+ data: <notification xmlns="urn:ietf:params:xml:ns:netconf:notification:1.0"><eventTime>2022-06-17T07:01:08.60228Z</eventTime><netconf-session-start xmlns="urn:ietf:params:xml:ns:yang:ietf-netconf-notifications"><username>root</username><source-host>127.0.0.1</source-host><session-id>2</session-id></netconf-session-start></notification>
+
+ data: <notification xmlns="urn:ietf:params:xml:ns:netconf:notification:1.0"><eventTime>2022-06-17T07:01:12.458258Z</eventTime><netconf-session-end xmlns="urn:ietf:params:xml:ns:yang:ietf-netconf-notifications"><username>root</username><source-host>127.0.0.1</source-host><termination-reason>closed</termination-reason><session-id>2</session-id></netconf-session-end></notification>
+
+
Netconf-connector + Netopeer
~~~~~~~~~~~~~~~~~~~~~~~~~~~~