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/UnresolvedTypesQuickFixTest.java
buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("E.java", buf.toString(), false, null);
		
		CompilationUnit astRoot= getASTRoot(cu);
		ArrayList proposals= collectCorrections(cu, astRoot);
		assertNumberOfProposals(proposals, 7);
		assertCorrectLabels(proposals);
		CUCorrectionProposal proposal= (CUCorrectionProposal) proposals.get(0);
		String preview1= getPreviewContent(proposal);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("import java.io.*;\n");
		buf.append("public class E {\n");
		buf.append("    void foo() {\n");
		buf.append("        Serializable[] v= new Serializable[10];\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected1= buf.toString();
		
		proposal= (CUCorrectionProposal) proposals.get(1);
		String preview2= getPreviewContent(proposal);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("import java.io.*;\n");
		buf.append("import java.util.ArrayList;\n");		
		buf.append("public class E {\n");
		buf.append("    void foo() {\n");
		buf.append("        Serializable[] v= new ArrayList[10];\n");