docs: def list_virtual(hostname, username, password, name):
      '''
      A function to list a specific virtual.
  
      hostname
          The host/address of the bigip device
      username
          The iControl REST username
      password
          The iControl REST password
      name
          The name of the virtual to list
      '''
  
      ret = {'name': name, 'changes': {}, 'result': False, 'comment': ''}
  
      if __opts__['test']:
          return _test_output(ret, 'list', params={
              'hostname': hostname,
              'username': username,
              'password': password,
              'name': name
          }
          )
  
      response = __salt__['bigip.list_virtual'](hostname, username, password, name)
      return _load_result(response, ret)