Repackager: pluggable layouts. Introduced NULL layout. This is what NONE should be.

Author: patrikbeno

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/Layouts.java

@@ -16,6 +16,8 @@
 
 package org.springframework.boot.loader.tools;
 
+import org.springframework.boot.loader.tools.layout.BaseLayout;
+
 import java.io.File;
 import java.util.Arrays;
 import java.util.Collections;
@@ -156,6 +158,11 @@ public boolean isExecutable() {
 
 	}
 
+	/**
+	 * This is what NONE should be.
+	 */
+	public static class Null extends BaseLayout {}
+
 	/**
 	 * Executable WAR layout.
 	 */