docs: def list_returners(*args):
      '''
      List the returners loaded on the minion
  
      .. versionadded:: 2014.7.0
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' sys.list_returners
  
      Returner names can be specified as globs.
  
      .. versionadded:: 2015.5.0
  
      .. code-block:: bash
  
          salt '*' sys.list_returners 's*'
  
      '''
      returners_ = salt.loader.returners(__opts__, [])
      returners = set()
  
      if not args:
          for func in six.iterkeys(returners_):
              returners.add(func.split('.')[0])
          return sorted(returners)
  
      for module in args:
          if '*' in module:
              for func in fnmatch.filter(returners_, module):
                  returners.add(func.split('.')[0])
          else:
              for func in returners_:
                  mod_test = func.split('.')[0]
                  if mod_test == module:
                      returners.add(mod_test)
      return sorted(returners)