Bug 72903 Add variable expansion for Test Class in JUnit launch configurations [JUnit]
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/launcher/JUnitMainTab.java
/**
	 * @see ILaunchConfigurationTab#performApply(ILaunchConfigurationWorkingCopy)
	 */
	public void performApply(ILaunchConfigurationWorkingCopy config) {
		if (fTestContainerRadioButton.getSelection() && fContainerElement != null) {
			config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, fContainerElement.getJavaProject().getElementName());
			config.setAttribute(JUnitBaseLaunchConfiguration.LAUNCH_CONTAINER_ATTR, fContainerElement.getHandleIdentifier());
			config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_MAIN_TYPE_NAME, ""); 
		} else {
			config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, fProjText.getText());
			config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_MAIN_TYPE_NAME, fTestText.getText());
			config.setAttribute(JUnitBaseLaunchConfiguration.LAUNCH_CONTAINER_ATTR, ""); 			
		}
		config.setAttribute(JUnitBaseLaunchConfiguration.ATTR_KEEPRUNNING, fKeepRunning.getSelection());
		config.setAttribute(JUnitBaseLaunchConfiguration.TESTNAME_ATTR, fOriginalTestMethodName);
		String testMethod= config.contentsEqual(config.getOriginal()) 
			? fOriginalTestMethodName
			: ""; 
		config.setAttribute(JUnitBaseLaunchConfiguration.TESTNAME_ATTR, testMethod);
		setTestMethodLabel(testMethod);
	}
	/**
	 * @see ILaunchConfigurationTab#dispose()
	 */
	public void dispose() {
		super.dispose();
		fTestIcon.dispose();
		fJavaElementLabelProvider.dispose();
	}
	/**