anchor.diff:  available, they will be added to this task to progressively meet the
   `:onyx/min-peers` number of peers concurrently working on this task.
   
  -=== Bulk Functions
  +=== Batch Functions
   
   Sometimes you might be able to perform a function more efficiently over
   a batch of segments rather than processing one segment at a time, such
   as writing segments to a database in a non-output task. You can receive
  -the entire batch of segments in bulk as an argument to your task by
  -setting `:onyx/bulk?` to `true` in your catalog entry for your function.
  -Onyx will _ignore_ the output of your function and pass the same
  -segments that you received downstream. The utility of this feature is
  -that you receive the entire batch in one shot. Onyx ignores your output
  -because it would make it impossible to track which specific messages are
  -children of particular upstream messages - breaking Onyx's fault
  -tolerance mechanism.
  -
  -Functions with this key enabled may _not_ be used with flow conditions.
  -These segments are passed to all immediate downstream tasks.
  +the entire batch of segments as an argument to your task by
  +setting `:onyx/batch-fn?` to `true` in your catalog entry for your function.
  +Your function _must_ return a sequence with the same number of elements
  +as its incoming batch has. The elements are then matched up positionally to
  +pair parent segments with their outgoing child segments. Elements in the output
  +may either be a single segment or a vector of segments, as normal.
  +The utility of this feature is you can use functions that are more efficient over
  +a large number of segments rather than one at a time.
   
   An example catalog entry:
   
  
positive.code: [source,clojure]
  ----
  (defn my-inc [segments]
    (prn segments)
    :ignored-return-value)
  ----
  
  The default value for this option is `false`.
  
negative.code: {:onyx/name :inc
   :onyx/fn :onyx.peer.batch-function-test/my-inc
   :onyx/type :function
   :onyx/batch-fn? true
   :onyx/batch-size batch-size}
  ----
  
  