ADDITIONAL SYSTEM INFORMATION :
Not relevant, problem observable directly in documentation.

A DESCRIPTION OF THE PROBLEM :
In

https://docs.oracle.com/en/java/javase/25/docs/api/jdk.jdi/com/sun/jdi/Type.html,

subinterfaces of PrimitiveType are listed. VoidType is included in this list. However, looking at the definition of VoidType, it only has the superinterfaces Mirror and Type.

https://docs.oracle.com/en/java/javase/25/docs/api/jdk.jdi/com/sun/jdi/Type.html

This causes a check in Java for PrimitiveType to not include VoidType at all. It is unknown whether this is a documentational error or if VoidType is truly supposed to be a subinterface of PrimitiveType.

I suspect that this is an error in the code, and that VoidType should have the superinterface of PrimitiveType.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
You don't need to reproduce this as it is observable in documentation. But you can run a type check on VoidType whether it is PrimitiveType. This check should pass according to documentation at https://docs.oracle.com/en/java/javase/25/docs/api/jdk.jdi/com/sun/jdi/Type.html.

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CUSTOMER SUBMITTED WORKAROUND :
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FREQUENCY :
ALWAYS