on_post_batch -> on_batch_complete

src/connection_handler.hpp

@@ -107,6 +107,6 @@ public:
    *
    * @param batch A span of unique_ptrs to the connections in the batch.
    */
-  virtual void on_post_batch(std::span<std::unique_ptr<Connection>> /*batch*/) {
-  }
+  virtual void
+  on_batch_complete(std::span<std::unique_ptr<Connection>> /*batch*/) {}
 };