As a plugin developer you can use this plugin as dependency of your plugin by adding a dependency tag to your POM.
To add the latest version of this plugin as a maven dependency, use the following:
<dependency>
<groupId>org.jenkins-ci.plugins</groupId>
<artifactId>audit-trail</artifactId>
<version>333.vb_e1b_b_0f1238c</version>
</dependency>