McFoggy commented on a change in pull request #438:
URL: https://github.com/apache/maven/pull/438#discussion_r564502239



##########
File path: 
maven-plugin-api/src/main/java/org/apache/maven/plugin/logging/Log.java
##########
@@ -63,6 +65,20 @@
      */
     void debug( Throwable error );
 
+    /**
+     * Send a message to the user in the <b>debug</b> error level by computing 
the message
+     * only when needed. The supplier will be called only if @see 
#isDebugEnabled() is <b>true</b>.
+     * 
+     * @param messageSupplier a non null Supplier of the message to use
+     */
+    default void debug( Supplier<String> messageSupplier )

Review comment:
       I used the default methods not to break any other potential 
implementation.
   If it is preferred not to do so then I can go with a breaking change and 
introduction of an Abstract class between the implementations. 
   Let's wait a bit for others POV.




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