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java.lang.NullPointerException: 	at org.eclipse.jdt.core.tests.model.TypeHierarchyTests.testGetAllClassesInRegion(TypeHierarchyTests.java:1202)	at java.lang.reflect.VMReflection.invokeMethod(VMReflection.java)	at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite.runTest(SuiteOfTestCases.java:99)	at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite.superRun(SuiteOfTestCases.java:83)	at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$1.protect(SuiteOfTestCases.java:71)	at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite.run(SuiteOfTestCases.java:80)	at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:330)	at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:204)	at org.eclipse.test.CoreTestApplication.runTests(CoreTestApplication.java:35)	at org.eclipse.test.CoreTestApplication.run(CoreTestApplication.java:31)	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:396)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)	at java.lang.reflect.VMReflection.invokeMethod(VMReflection.java)	at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)	at org.eclipse.core.launcher.Main.basicRun(Main.java:280)	at org.eclipse.core.launcher.Main.run(Main.java:977)	at org.eclipse.core.launcher.Main.main(Main.java:952)	at java.lang.reflect.VMReflection.invokeMethod(VMReflection.java)	at org.apache.harmony.vm.JarRunner.main(JarRunner.java:80)