IssueTracker

Please fill out the following:

- Description
Youtube search.list API returns nextPageToken even when there is only 1 result

- API request with parameters used (DO NOT include your credential)
GET https://www.googleapis.com/youtube/v3/search?part=snippet&maxResults=50&order=viewCount&publishedAfter=2017-05-14T01%3A00%3A00.000Z&publishedBefore=2017-05-14T01%3A01%3A00.000Z&regionCode=jp&topicId=%2Fm%2F0bzvm2&type=channel&key={YOUR_API_KEY}

- Result (copy and paste a JSON response you received)
{
 "kind": "youtube#searchListResponse",
 "etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/hpgB0nwVnLVQQAUwvOVUN-mowVo\"",
 "nextPageToken": "CDIQAA",
 "regionCode": "JP",
 "pageInfo": {
  "totalResults": 57942,
  "resultsPerPage": 50
 },
 "items": [
  {
   "kind": "youtube#searchResult",
   "etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/7URwbaDov0s9jFTdZN0kQlmIhQE\"",
   "id": {
    "kind": "youtube#channel",
    "channelId": "UCyoJtdZAQ-otQP52ePVKI_g"
   },
   "snippet": {
    "publishedAt": "2017-05-14T01:00:20.000Z",
    "channelId": "UCyoJtdZAQ-otQP52ePVKI_g",
    "title": "Light in the Window Productions",
    "description": "We here at Light in the Window Productions pride ourselves on being different in many aspects. One is that we have many different types of videos all on one ...",
    "thumbnails": {
     "default": {
      "url": "https://yt3.ggpht.com/-v6qP8jeTGG0/AAAAAAAAAAI/AAAAAAAAAAA/A1QLVF96AUI/s88-c-k-no-mo-rj-c0xffffff/photo.jpg"
     },
     "medium": {
      "url": "https://yt3.ggpht.com/-v6qP8jeTGG0/AAAAAAAAAAI/AAAAAAAAAAA/A1QLVF96AUI/s240-c-k-no-mo-rj-c0xffffff/photo.jpg"
     },
     "high": {
      "url": "https://yt3.ggpht.com/-v6qP8jeTGG0/AAAAAAAAAAI/AAAAAAAAAAA/A1QLVF96AUI/s240-c-k-no-mo-rj-c0xffffff/photo.jpg"
     }
    },
    "channelTitle": "Light in the Window Productions",
    "liveBroadcastContent": "upcoming"
   }
  }
 ]
}

- Expected result
nextPageToken is null
and pageInfo.totalResults is 1

- Is it 100% reproducible? Yes

- Reproducible API explorer link
https://developers.google.com/apis-explorer/#p/youtube/v3/youtube.search.list?part=snippet&maxResults=50&order=viewCount&publishedAfter=2017-05-14T01%253A00%253A00.000Z&publishedBefore=2017-05-14T01%253A01%253A00.000Z&regionCode=jp&topicId=%252Fm%252F0bzvm2&type=channel&_h=3&