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>io.jenkins.plugins</groupId>
<artifactId>gcs-jobcacher-storage</artifactId>
<version>7.v7a_3471ddb_5f8</version>
</dependency>