subscription Key
Specifies the IntelliJ IDEA subscription key file used by sandbox-producing tasks. The key is copied to config/idea.key, and com.intellij.modules.ultimate is removed from config/disabled_plugins.txt in each prepared sandbox.
This value can be overridden for an individual sandbox task with org.jetbrains.intellij.platform.gradle.tasks.PrepareSandboxTask.subscriptionKey.
Default value: GradleProperties.SubscriptionKey