diff --git a/src/org/jgroups/protocols/BaseBundler.java b/src/org/jgroups/protocols/BaseBundler.java
index 81400fc6d7..fb9546fc1c 100644
--- a/src/org/jgroups/protocols/BaseBundler.java
+++ b/src/org/jgroups/protocols/BaseBundler.java
@@ -74,7 +74,7 @@ public String printBuffers() {
 
     public void init(TP transport) {
         this.transport=transport;
-        msg_processing_policy=transport.msgProcessingPolicy();
+        msg_processing_policy=transport.getMsgProcessingPolicy();
         msg_stats=transport.getMessageStats();
         log=transport.getLog();
         output=new ByteArrayDataOutputStream(max_size + MSG_OVERHEAD);
diff --git a/src/org/jgroups/protocols/DAISYCHAIN.java b/src/org/jgroups/protocols/DAISYCHAIN.java
index 7d0abdf302..16e4000484 100644
--- a/src/org/jgroups/protocols/DAISYCHAIN.java
+++ b/src/org/jgroups/protocols/DAISYCHAIN.java
@@ -76,7 +76,7 @@ public Object down(Message msg) {
                 msg.setSrc(local_addr);
             if(log.isTraceEnabled())
                 log.trace("%s: looping back message %s", local_addr, msg);
-            transport.msgProcessingPolicy().loopback(msg, msg.isFlagSet(Message.Flag.OOB));
+            transport.getMsgProcessingPolicy().loopback(msg, msg.isFlagSet(Message.Flag.OOB));
         }
 
         // we need to copy the message, as we cannot do a msg.setSrc(next): the next retransmission
diff --git a/src/org/jgroups/protocols/PerDestinationBundler.java b/src/org/jgroups/protocols/PerDestinationBundler.java
index ff8bc1c2d4..f92eba5efd 100644
--- a/src/org/jgroups/protocols/PerDestinationBundler.java
+++ b/src/org/jgroups/protocols/PerDestinationBundler.java
@@ -96,7 +96,7 @@ public double avgBatchSize() {
 
     public void init(TP transport) {
         this.transport=Objects.requireNonNull(transport);
-        msg_processing_policy=transport.msgProcessingPolicy();
+        msg_processing_policy=transport.getMsgProcessingPolicy();
         msg_stats=transport.getMessageStats();
         this.log=transport.getLog();
     }
diff --git a/src/org/jgroups/protocols/TP.java b/src/org/jgroups/protocols/TP.java
index 55ed5ef88e..71ac1c662b 100644
--- a/src/org/jgroups/protocols/TP.java
+++ b/src/org/jgroups/protocols/TP.java
@@ -207,6 +207,9 @@ public String getBundlerClass() {
     public long             getTimeServiceInterval() {return time_service_interval;}
     public <T extends TP> T setTimeServiceInterval(long t) {this.time_service_interval=t; return (T)this;}
 
+    public boolean          isUseVirtualThreads()        {return use_vthreads;}
+    public <T extends TP> T useVirtualThreads(boolean b) {use_vthreads=b; return (T)this;}
+
     public boolean          logDiscardMsgs() {return log_discard_msgs;}
     public <T extends TP> T logDiscardMsgs(boolean l) {this.log_discard_msgs=l; return (T)this;}
 
@@ -249,10 +252,9 @@ public <T extends Protocol> T setLevel(String level) {
 
     @ManagedOperation(description="Changes the message processing policy. The fully qualified name of a class " +
       "implementing MessageProcessingPolicy needs to be given")
-    public void setMessageProcessingPolicy(String policy) {
+    public <T extends TP> T setMessageProcessingPolicy(String policy) {
         if(policy == null)
-            return;
-
+            return (T)this;
         if(policy.startsWith("submit"))
             msg_processing_policy=new SubmitToThreadPool();
         else if(policy.startsWith("max"))
@@ -272,6 +274,7 @@ else if(policy.startsWith("unbatch"))
         catch(Exception e) {
             log.error("failed setting message_processing_policy", e);
         }
+        return (T)this;
     }
 
     public MessageProcessingPolicy getMessageProcessingPolicy() {return msg_processing_policy;}
@@ -443,7 +446,10 @@ protected TP() {
     }
 
     public MsgStats                getMessageStats()     {return msg_stats;}
-    public MessageProcessingPolicy msgProcessingPolicy() {return msg_processing_policy;}
+
+    public MessageProcessingPolicy getMsgProcessingPolicy()                       {return msg_processing_policy;}
+    public <T extends TP> T        msgProcessingPolicy(MessageProcessingPolicy p) {this.msg_processing_policy=p; return (T)this;}
+
     public RTT                     getRTT()              {return rtt;}
 
     @Override