Bug 63840 warning on unused labels
we have warnings for all sorts of unused things. one for unused labels would be good too.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/ProblemSeveritiesConfigurationBlock.java
String[] enabledDisabled= new String[] { ENABLED, DISABLED };
		
		int nColumns= 3;
		
		final ScrolledPageContent sc1 = new ScrolledPageContent(folder);
		
		Composite composite= sc1.getBody();
		GridLayout layout= new GridLayout(nColumns, false);
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		composite.setLayout(layout);
		
		Label description= new Label(composite, SWT.LEFT | SWT.WRAP);
		description.setFont(description.getFont());
		description.setText(PreferencesMessages.ProblemSeveritiesConfigurationBlock_common_description); 
		description.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, true, false, nColumns - 1, 1));
				
		int indentStep=  fPixelConverter.convertWidthInCharsToPixels(1);
		
		int defaultIndent= indentStep * 0;
		int extraIndent= indentStep * 2;
		String label;
		ExpandableComposite excomposite;
		Composite inner;
		
		
		
		label= PreferencesMessages.ProblemSeveritiesConfigurationBlock_section_code_style; 
		excomposite= createStyleSection(composite, label, nColumns);