GetJBDSInstallerLink.groovy scripts has no permissions to use some features of Jenkins API

A lot of installer tests are failing because after last update of Jenkins script [1] GetJBDSInstallerLink.groovy hasn't permission to use some features of Jenkins API.

[1] https://github.com/jbdevstudio/jbdevstudio-qa/blob/master/jenkins-script/GetJBDSInstallerLink.groovy

There is this error message in the log:

ERROR: Build step failed with exception
org.jenkinsci.plugins.scriptsecurity.sandbox.RejectedAccessException: Scripts not permitted to use new java.util.HashMap

The rights were limited for a security reason so I need to findout a workaround.