code: def insert(self, data):
          
          return json.loads(self._post('', headers=KVStoreCollectionData.JSON_HEADER, body=data).body.read().decode('utf-8'))
docs: Inserts item into this collection. An _id field will be generated if not assigned in the data.
  
          :param data: Document to insert
          :type data: ``string``
  
          :return: _id of inserted object
          :rtype: ``dict``