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>com.bmc.ims</groupId>
<artifactId>bmc-change-manager-imstm</artifactId>
<version>66.v12c841920f7d</version>
</dependency>