Enable help goal
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<version>3.6.0</version>
+ <executions>
+ <execution>
+ <id>help-goal</id>
+ <goals>
+ <goal>helpmojo</goal>
+ </goals>
+ <configuration>
+ <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
+ </configuration>
+ </execution>
+ </executions>
</plugin>
</plugins>
</build>
