src/jdk.javadoc/share/classes/module-info.java

@@ -24,10 +24,12 @@
  */
 
 /** Defines the implementation of the
  *  {@link javax.tools.ToolProvider#getSystemDocumentationTool system documentation tool}
  *  and its command line equivalent, <em>javadoc</em>.
+ *
+ *  @since 9
  */
 module jdk.javadoc {
     requires transitive java.compiler;
     requires transitive jdk.compiler;
     requires java.xml;