--- a/src/java.net.http/share/classes/jdk/internal/net/http/common/FlowTube.java	Thu Apr 19 16:47:52 2018 +0100
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/common/FlowTube.java	Mon Apr 23 15:45:40 2018 +0100
@@ -63,6 +63,8 @@
          */
         default void dropSubscription() { }
 
+        default boolean supportsRecycling() { return false; }
+
     }
 
     /**