User relation context
---------------------------

When adding a user, multiple services are often added at the same time. For example, multiple phones with 
multiple lines. 

During the "Add" operation, the ``AddSubscriberNew`` workflow
therefore iterates (loops) over these added services and makes
the data for each instance available in a *context variable*.

Consider for example the following workflow input context
for adding a simple user:

::

   {
       "input": {
           "userid": "TestUserX77",
           "firstName": "Test", 
           "lastName": "UserX77", 
           "mailid": "testuserx77@mail.com", 
           "Phone": [
               {
                   "name": "SEP111222333444", 
                   "product": "Cisco Unified Client Services Framework", 
                   "protocol": "SIP", 
                   "lines": {
                       "line": [
                           {
                               "dirn": {
                                   "pattern": "82007", 
                                   "routePartitionName": "Cu1-DirNum-PT"
                               }
                           }
                       ]
                   }
               },
               {
                   "name": "SEP000222333444", 
                   "product": "Cisco Unified Client Services Framework", 
                   "protocol": "SIP", 
                   "lines": {
                       "line": [
                           {
                               "dirn": {
                                   "pattern": "82008", 
                                   "routePartitionName": "Cu1-DirNum-PT"
                               }
                           }
                       ]
                   }
               }
           ]
       }
   }

The input context shows there are two phones, each with one line. The ``AddSubscriberNew`` 
workflow loops over the phones and put the entire contents of each instance in a context macro 
called ``{{ input.PhoneX }}``.

Therefore, when it iterates over the first phone, ``{{ input.PhoneX }}`` will be equal to:


::

   {
       "name": "SEP111222333444", 
       "product": "Cisco Unified Client Services Framework", 
       "protocol": "SIP", 
       "lines": {
           "line": [
               {
                   "dirn": {
                       "pattern": "82007", 
                       "routePartitionName": "Cu1-DirNum-PT"
                   }
               }
           ]
       }
   }


In particular, the input context variable ``{{ input.PhoneX.name }}`` will be equal to ``SEP111222333444``.
During the second iteration, ``{{ input.PhoneX.name }}`` will be equal to ``SEP000222333444``.