--- a/src/org/eclipse/jetty/io/Buffer.java	Thu Nov 03 22:16:11 2016 -0600
+++ b/src/org/eclipse/jetty/io/Buffer.java	Thu Nov 03 22:55:28 2016 -0600
@@ -40,10 +40,9 @@
  *
  * @version 1.0
  */
-public interface Buffer extends Cloneable
+public interface Buffer
 {
 	public final static int 
-	  IMMUTABLE=0,  // neither indexes or contexts can be changed
 	  READONLY=1,   // indexes may be changed, but not content
 	  READWRITE=2;  // anything can be changed
 
@@ -126,13 +125,6 @@
 	
 	/**
 	 * 
-	 * @return a <code>boolean</code> value true if the buffer is immutable and that neither
-	 * the buffer contents nor the indexes may be changed.
-	 */
-	boolean isImmutable();
-	
-	/**
-	 * 
 	 * @return a <code>boolean</code> value true if the buffer is readonly. The buffer indexes may
 	 * be modified, but the buffer contents may not. For example a View onto an immutable Buffer will be
 	 * read only.