anchor.diff:  
   `hits`::
   (object)
  -Contains matching events and metadata.
  +Contains matching events and sequences. Also contains related metadata.
   +
   .Properties of `hits`
   [%collapsible%open]
  
positive.code: 
  `value`::
  (integer)
  Total number of matching events.
  
  `relation`::
  +
  --
  (string)
  Indicates whether the number of events returned is accurate or a lower bound.
  
  Returned values are:
  
  `eq`::: Accurate
  `gte`::: Lower bound, including returned events
  --
  =====
  
  
negative.code: 
  `total`::
  (object)
  Metadata about the number of matching events or sequences.
  +
  .Properties of `total`
  [%collapsible%open]
  