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.atlassian.jira.software.cloud.jenkins</groupId>
<artifactId>atlassian-jira-software-cloud</artifactId>
<version>2.0.15</version>
</dependency>