fix: add overlay to remove nullable from pagination offset params (#121)

README.md

@@ -169,6 +169,36 @@ asyncio.run(main())
 
 <!-- No Custom HTTP Client [http-client] -->
 
+<!-- Start Pagination [pagination] -->
+## Pagination
+
+Some of the endpoints in this SDK support pagination. To use pagination, you make your SDK calls as usual, but the
+returned response object will have a `Next` method that can be called to pull down the next group of results. If the
+return value of `Next` is `None`, then there are no more pages to be fetched.
+
+Here's an example of one such pagination call:
+```python
+from openrouter import OpenRouter
+import os
+
+
+with OpenRouter(
+    http_referer="<value>",
+    x_open_router_title="<value>",
+    x_open_router_categories="<value>",
+    api_key=os.getenv("OPENROUTER_API_KEY", ""),
+) as open_router:
+
+    res = open_router.guardrails.list()
+
+    while res is not None:
+        # Handle items
+
+        res = res.next()
+
+```
+<!-- End Pagination [pagination] -->
+
 <!-- Start Resource Management [resource-management] -->
 ## Resource Management