docs: def create_node(hostname, username, password, name, address, trans_label=None):
      '''
      A function to connect to a bigip device and create a node.
  
      hostname
          The host/address of the bigip device
      username
          The iControl REST username
      password
          The iControl REST password
      name
          The name of the node
      address
          The address of the node
      trans_label
          The label of the transaction stored within the grain:
          ``bigip_f5_trans:<label>``
  
      CLI Example::
  
          salt '*' bigip.create_node bigip admin admin 10.1.1.2
      '''
  
      #build session
      bigip_session = _build_session(username, password, trans_label)
  
      #construct the payload
      payload = {}
      payload['name'] = name
      payload['address'] = address
  
      #post to REST
      try:
          response = bigip_session.post(
              BIG_IP_URL_BASE.format(host=hostname) + '/ltm/node',
              data=salt.utils.json.dumps(payload))
      except requests.exceptions.ConnectionError as e:
          return _load_connection_error(hostname, e)
  
      return _load_response(response)