To use soot-maven-plugin as a part of your project build, declare it as any other plugin:
<project>
...
<build>
<plugins>
<plugin>
<groupId>net.ju-n.maven.plugins</groupId>
<artifactId>soot-maven-plugin</artifactId>
<version>0.1.1</version>
<executions>
<execution>
<goals>
<goal><!-- put the goal name here --></goal>
</goals>
</execution>
</executions>
<configuration>
<!-- put your configurations here -->
</configuration>
</plugin>
...
</plugins>
</build>
...
</project>
See the examples sections for concrete examples of use.