anchor.diff:  An influencer object has the following properties:
   
   `bucket_span`::
  -  (time units) The length of the bucket. This value matches the `bucket_span`
  +  (number) The length of the bucket in seconds. This value matches the `bucket_span`
     that is specified in the job.
   
   `influencer_score`::
  
positive.code:   (array) The actual value for the bucket.
  
  `bucket_span`::
    (time units) The length of the bucket.
    This value matches the `bucket_span` that is specified in the job.
  
  `by_field_name`::
  
negative.code:   For more information, see <<ml-results-bucket-influencers,Bucket Influencers>>.
  
  `bucket_span`::
    (number) The length of the bucket in seconds.
    This value matches the `bucket_span` that is specified in the job.
  
  `event_count`::
  