code: func (c *TranscriptionService) GetPageIterator(data url.Values) *TranscriptionPageIterator {
  	iter := NewPageIterator(c.client, data, transcriptionPathPart)
  	return &TranscriptionPageIterator{
  		p: iter,
  	}
  }
docs: // GetPageIterator returns a TranscriptionPageIterator with the given page
  // filters. Call iterator.Next() to get the first page of resources (and again to
  // retrieve subsequent pages).