removed the comment and returned a final modification to the method.

jme3-core/src/main/java/com/jme3/shadow/AbstractShadowRenderer.java

@@ -204,7 +204,7 @@ public abstract class AbstractShadowRenderer implements SceneProcessor, Savable,
      *
      * @param postShadowMat
      */
-    protected void setPostShadowMaterial(Material postShadowMat) {
+    protected final void setPostShadowMaterial(Material postShadowMat) {
         this.postshadowMat = postShadowMat;
         postshadowMat.setFloat("ShadowMapSize", shadowMapSize);
         for (int i = 0; i < nbShadowMaps; i++) {

jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java

@@ -136,7 +136,6 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     protected void updateShadowCams(Camera viewCam) {
 
-        // it needs to support for editors
         if (light == null) {
             logger.warning("The light can't be null for a " + getClass().getName());
             return;