Error visible in
https://ci.eclipse.org/releng/job/Builds/job/I-build-4.39/53/console :
```
09:24:41 [ERROR]
/home/jenkins/agent/workspace/Builds/I-build-4.39/cje-production/gitCache/eclipse.platform.releng.aggregator/eclipse.jdt.ui/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/InternalClassFileEditorInput.java:[107]
09:24:41 [ERROR] return ((IModularClassFile)
fClassFile).getModule().getElementName();
09:24:41 [ERROR] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
09:24:41 [ERROR] Unnecessary cast from IClassFile to IModularClassFile
09:24:41 [ERROR] -> [Help 1]
```
IClassFile inherits getModule method from ITypeRoot so this renders the
purpose of IModularClassfile unclear/useless.