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You're looking for the CheckboxTree class.

There's the UI Inspector tool available that you may use next time, allows for inspecting any of the IDE UI components.

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I found the Checkbox Tree before, but I do not fully understand its usage. I could not find a detailed documentation. Can you send me a simple code sample?

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You can search the idea-community repository for the class occurrences to get some examples:

https://github.com/JetBrains/intellij-community/search?q=CheckboxTree

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I found what I was looking for. Thank you for your help!

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