docs/Mailgun.md in ultracart_api-3.10.220 vs docs/Mailgun.md in ultracart_api-4.0.32.rc

@@ -1,8 +1,18 @@
-# UltracartClient::Mailgun
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**api_key** | **String** |  | [optional] 
-
-
+# UltracartClient::Mailgun
+
+## Properties
+
+| Name | Type | Description | Notes |
+| ---- | ---- | ----------- | ----- |
+| **api_key** | **String** |  | [optional] |
+
+## Example
+
+```ruby
+require 'ultracart_api'
+
+instance = UltracartClient::Mailgun.new(
+  api_key: null
+)
+```
+