return httpx.Response(200, json={"text": "Hello, world!"})
```
-Or this example, which uses a custom transport and `httpx.Mounts` to always redirect `http://` requests.
+Or this example, which uses a custom transport and `mounts` parameter to always redirect `http://` requests.
```python
class HTTPSRedirect(httpx.BaseTransport):
return httpx.Response(303, headers={"Location": str(url)})
# A client where any `http` requests are always redirected to `https`
-transport = httpx.Mounts({
+mounts = {
'http://': HTTPSRedirect()
'https://': httpx.HTTPTransport()
-})
-client = httpx.Client(transport=transport)
+}
+client = httpx.Client(mounts=mounts)
```
A useful pattern here is custom transport classes that wrap the default HTTP implementation. For example...