Configuring Custom Javadoc Tags
To configure any custom tags, use <tags/> parameter as shown below. Each tag will be consist of a <name/>, a <placement/> and a <head/>. The <placement/> should be a combination of the letters Xaoptcmf:
- X (disable tag)
 - a (all)
 - o (overview)
 - p (packages)
 - t (types, that is classes and interfaces)
 - c (constructors)
 - m (methods)
 - f (fields)
 
For instance, with the following configuration:
<project>
  ...
  <reporting> (or <build>)
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <version>3.11.2</version>
        <configuration>
          ...
          <tags>
            <tag>
              <name>todo</name>
              <!-- todo tag for all places -->
              <placement>a</placement>
              <head>To do something:</head>
            </tag>
          </tags>
          ...
        </configuration>
      </plugin>
    </plugins>
    ...
  </reporting> (or </build>)
  ...
</project>and with the following todo tag in a class:
/**
 * Hello world!
 *
 * @todo complete me!
 */
public class App {}the Javadoc tool will generate the following Javadoc:
public class App
extends Object
Hello world!
To do something:
    complete me!


