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
fTestMethodLabel.setLayoutData(gd);
		
	}
	protected void createTestContainerSelectionGroup(Composite comp) {
		fTestContainerRadioButton= new Button(comp, SWT.RADIO);
		fTestContainerRadioButton.setText(JUnitMessages.getString("JUnitMainTab.label.containerTest")); 
		GridData gd = new GridData();
		gd.horizontalSpan = 3;
		fTestContainerRadioButton.setLayoutData(gd);
		fTestContainerRadioButton.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				if (fTestContainerRadioButton.getSelection())
					testModeChanged();
			}
			public void widgetDefaultSelected(SelectionEvent e) {
			}
		});
		
		fContainerText = new Text(comp, SWT.SINGLE | SWT.BORDER | SWT.READ_ONLY);
		gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalIndent= 25;
		gd.horizontalSpan = 2;
		fContainerText.setLayoutData(gd);
		fContainerText.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent evt) {
				updateLaunchConfigurationDialog();
			}
		});
		
		fContainerSearchButton = new Button(comp, SWT.PUSH);