review comments

Signed-off-by: Alexander Matveev <[email protected]>

vllm/v1/utils.py

@@ -71,9 +71,9 @@ def __init__(self, size: int):
         self.cache = OrderedDict()
         self.size = size
 
-    def get(self, key):
+    def get(self, key, default = None):
         if key not in self.cache:
-            return None
+            return default
 
         self.cache.move_to_end(key)
         return self.cache[key]