Bug 125872 [clean up] 'Serial id' should not be in J2SE 5 section
20060131 'Serial id' should not be in J2SE 5 section. It is valid for all source levels.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/CleanUpTest.java
refactoring.addCompilationUnit(cu2);
		
		ICleanUp cleanUp= new UnusedCodeCleanUp(UnusedCodeCleanUp.REMOVE_UNUSED_CAST);
		refactoring.addCleanUp(cleanUp);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E1  {\n");
		buf.append("    private void foo(String s) {\n");
		buf.append("        String s1= s;\n");
		buf.append("        Object o= new Object();\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected1= buf.toString();
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E2 {\n");
		buf.append("    String s1;\n");
		buf.append("    String s2= s1;\n");
		buf.append("    public void foo(Integer i) {\n");
		buf.append("        Number n= i;\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected2= buf.toString();
		
		assertRefactoringResultAsExpected(refactoring, new String[] {expected1, expected2});
	}
	
	public void testUnusedCodeBug123766() throws Exception {