Returns a list of publishing destinations associated with the specified
dectectorId.
guardduty_list_publishing_destinations(DetectorId, MaxResults,
  NextToken)[required] The ID of the detector to retrieve publishing destinations for.
The maximum number of results to return in the response.
A token to use for paginating results returned in the repsonse. Set the
value of this parameter to null for the first request to a list action.
For subsequent calls, use the NextToken value returned from the
previous request to continue listing results after the first page.
svc$list_publishing_destinations( DetectorId = "string", MaxResults = 123, NextToken = "string" )