Fix warnings and typo in NestedResource (#852)

* Fix typo in NestedResource

* Fix warnings and indentation in NestedResource

lib/stripe/api_operations/nested_resource.rb

@@ -6,17 +6,19 @@ module APIOperations
     # that it's possible to do so from a static context (i.e. without a
     # pre-existing collection of subresources on the parent).
     #
-    # For examle, a transfer gains the static methods for reversals so that the
+    # For example, a transfer gains the static methods for reversals so that the
     # methods `.create_reversal`, `.retrieve_reversal`, `.update_reversal`,
     # etc. all become available.
     module NestedResource
       def nested_resource_class_methods(resource, path: nil, operations: nil,
                                         resource_plural: nil)
         resource_plural ||= "#{resource}s"
         path ||= resource_plural
+
         raise ArgumentError, "operations array required" if operations.nil?
 
         resource_url_method = :"#{resource}s_url"
+
         define_singleton_method(resource_url_method) do |id, nested_id = nil|
           url = "#{resource_url}/#{CGI.escape(id)}/#{CGI.escape(path)}"
           url += "/#{CGI.escape(nested_id)}" unless nested_id.nil?
@@ -27,39 +29,39 @@ def nested_resource_class_methods(resource, path: nil, operations: nil,
           case operation
           when :create
             define_singleton_method(:"create_#{resource}") \
-                do |id, params = {}, opts = {}|
-              url = send(resource_url_method, id)
-              resp, opts = request(:post, url, params, opts)
-              Util.convert_to_stripe_object(resp.data, opts)
-            end
+              do |id, params = {}, opts = {}|
+                url = send(resource_url_method, id)
+                resp, opts = request(:post, url, params, opts)
+                Util.convert_to_stripe_object(resp.data, opts)
+              end
           when :retrieve
             define_singleton_method(:"retrieve_#{resource}") \
-                do |id, nested_id, opts = {}|
-              url = send(resource_url_method, id, nested_id)
-              resp, opts = request(:get, url, {}, opts)
-              Util.convert_to_stripe_object(resp.data, opts)
-            end
+              do |id, nested_id, opts = {}|
+                url = send(resource_url_method, id, nested_id)
+                resp, opts = request(:get, url, {}, opts)
+                Util.convert_to_stripe_object(resp.data, opts)
+              end
           when :update
             define_singleton_method(:"update_#{resource}") \
-                do |id, nested_id, params = {}, opts = {}|
-              url = send(resource_url_method, id, nested_id)
-              resp, opts = request(:post, url, params, opts)
-              Util.convert_to_stripe_object(resp.data, opts)
-            end
+              do |id, nested_id, params = {}, opts = {}|
+                url = send(resource_url_method, id, nested_id)
+                resp, opts = request(:post, url, params, opts)
+                Util.convert_to_stripe_object(resp.data, opts)
+              end
           when :delete
             define_singleton_method(:"delete_#{resource}") \
-                do |id, nested_id, params = {}, opts = {}|
-              url = send(resource_url_method, id, nested_id)
-              resp, opts = request(:delete, url, params, opts)
-              Util.convert_to_stripe_object(resp.data, opts)
-            end
+              do |id, nested_id, params = {}, opts = {}|
+                url = send(resource_url_method, id, nested_id)
+                resp, opts = request(:delete, url, params, opts)
+                Util.convert_to_stripe_object(resp.data, opts)
+              end
           when :list
             define_singleton_method(:"list_#{resource_plural}") \
-                do |id, params = {}, opts = {}|
-              url = send(resource_url_method, id)
-              resp, opts = request(:get, url, params, opts)
-              Util.convert_to_stripe_object(resp.data, opts)
-            end
+              do |id, params = {}, opts = {}|
+                url = send(resource_url_method, id)
+                resp, opts = request(:get, url, params, opts)
+                Util.convert_to_stripe_object(resp.data, opts)
+              end
           else
             raise ArgumentError, "Unknown operation: #{operation.inspect}"
           end