docs: def mod_watch(name, **kwargs):
      '''
      The etcd watcher, called to invoke the watch command.
      When called, execute a etcd function based on a watch call requisite.
  
      .. note::
          This state exists to support special handling of the ``watch``
          :ref:`requisite <requisites>`. It should not be called directly.
  
          Parameters for this function should be set by the state being triggered.
      '''
  
      # Watch to set etcd key
      if kwargs.get('sfun') in ['wait_set_key', 'wait_set']:
          return set_(
              name,
              kwargs.get('value'),
              kwargs.get('profile'))
  
      # Watch to rm etcd key
      if kwargs.get('sfun') in ['wait_rm_key', 'wait_rm']:
          return rm(
              name,
              kwargs.get('profile'))
  
      return {
          'name': name,
          'changes': {},
          'comment': 'etcd.{0[sfun]} does not work with the watch requisite, '
                     'please use etcd.wait_set or etcd.wait_rm'.format(kwargs),
          'result': False
      }