diff --git a/requests/adapters.py b/requests/adapters.py
index 806641f7..7db5b0ad 100644
--- a/requests/adapters.py
+++ b/requests/adapters.py
@@ -122,6 +122,7 @@ class HTTPAdapter(BaseAdapter):
         return response
 
     def get_connection(self, url, proxies=None):
+        """Returns a connection for the given URL."""
         proxies = proxies or {}
         proxy = proxies.get(urlparse(url).scheme)