[LANG-1467] Add zero arg constructor for

org.apache.commons.lang3.NotImplementedException.</action>

src/changes/changes.xml

@@ -51,6 +51,7 @@ The <action> type attribute can be add,update,fix,remove.
     <action issue="LANG-1458" type="add" dev="ggregory">Add EMPTY_ARRAY constants to classes in org.apache.commons.lang3.tuple.</action>
     <action                   type="update" dev="ggregory">checkstyle.version 8.18 -> 8.20.</action>
     <action issue="LANG-1461" type="add" dev="ggregory">Add null-safe StringUtils APIs to wrap String#getBytes([Charset|String]).</action>
+    <action issue="LANG-1467" type="add" dev="ggregory">Add zero arg constructor for org.apache.commons.lang3.NotImplementedException.</action>
   </release>
 
   <release version="3.9" date="2019-04-09" description="New features and bug fixes. Requires Java 8, supports Java 9, 10, 11">

src/main/java/org/apache/commons/lang3/NotImplementedException.java

@@ -46,6 +46,15 @@ public class NotImplementedException extends UnsupportedOperationException {
 
     private final String code;
 
+    /**
+     * Constructs a NotImplementedException.
+     *
+     * @since 3.10
+     */
+    public NotImplementedException() {
+        this.code = null;
+    }
+
     /**
      * Constructs a NotImplementedException.
      *