ListObject extends ApiOperations::Create

- Addresses a bit of duplication.

lib/stripe/list_object.rb

@@ -3,6 +3,7 @@ module Stripe
     include Enumerable
     include Stripe::APIOperations::List
     include Stripe::APIOperations::Request
+    include Stripe::APIOperations::Create
 
     # This accessor allows a `ListObject` to inherit various filters that were
     # given to a predecessor. This allows for things like consistent limits,
@@ -67,11 +68,6 @@ module Stripe
       Util.convert_to_stripe_object(response, opts)
     end
 
-    def create(params={}, opts={})
-      response, opts = request(:post, url, params, opts)
-      Util.convert_to_stripe_object(response, opts)
-    end
-
     # Fetches the next page in the resource list (if there is one).
     #
     # This method will try to respect the limit of the current page. If none