Bug 76530 [options] Warn about unused local variables and private members
I think we should warn about unused local variables and unused private members by default. These things are errors akin to unused imports, which we already warn about.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/ReorgQuickFixTest.java
public void testWrongPackageStatementFromDefault() throws Exception {
		IPackageFragment pack1= fSourceFolder.createPackageFragment("", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package test2;\n");
		buf.append("\n");				
		buf.append("public class E {\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("E.java", buf.toString(), false, null);
		
		CompilationUnit astRoot= getASTRoot(cu);
		ArrayList proposals= collectCorrections(cu, astRoot);
		assertNumberOfProposals(proposals, 2);
		assertCorrectLabels(proposals);
		
		boolean hasRename= true, hasMove= true;
		
		for (int i= 0; i < proposals.size(); i++) {
			ChangeCorrectionProposal curr= (ChangeCorrectionProposal) proposals.get(i);
			if (curr instanceof CorrectPackageDeclarationProposal) {
				assertTrue("Duplicated proposal", hasRename);
				hasRename= false;
				
				CUCorrectionProposal proposal= (CUCorrectionProposal) curr;
				String preview= getPreviewContent(proposal);				
				buf= new StringBuffer();
				buf.append("\n");
				buf.append("\n");
				buf.append("public class E {\n");
				buf.append("}\n");
				assertEqualString(preview, buf.toString());