mapper.rb in freno-client-0.8.2

- old
+ new

@@ -1,8 +1,9 @@
+# frozen_string_literal: true
+
 module Freno
   class Throttler
-
     # A Mapper is any object that responds to `call`, by receiving a context
     # object and returning a list of strings, each of which corresponds to the
     # store_name that will be checked in freno.
     #
     # See https://github.com/github/freno/blob/master/doc/http.md#client-requests
@@ -11,10 +12,9 @@
     # As an example we could use a mapper that will receive as a context a set
     # of [table, shard_id] tuples, and could return the list of all the stores
     # where that shards exist.
     #
     module Mapper
-
       # The Identity mapper is the one used by default in the Throttler.
       #
       # It works by informing the throttler to check exact same stores that it
       # receives as context, without any translation.
       #