Bug 129807 [cleanup] Add final cleanup should only add keyword on methods with body
I20060223-1656 + ZRH plugin export The final keyword should only be added on methods with body. In particular, final should be omitted for interface methods and abstract methods.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/CleanUpTest.java
CleanUpRefactoring refactoring= new CleanUpRefactoring();
		refactoring.addCompilationUnit(cu1);
		
		ICleanUp cleanUp1= new CodeStyleCleanUp(CodeStyleCleanUp.QUALIFY_FIELD_ACCESS);
		ICleanUp cleanUp2= new UnusedCodeCleanUp(UnusedCodeCleanUp.REMOVE_UNUSED_PRIVATE_FIELDS);
		refactoring.addCleanUp(cleanUp1);
		refactoring.addCleanUp(cleanUp2);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("\n");
		buf.append("public class E1 {\n");
		buf.append("    private int j= 20;\n");
		buf.append("    \n");
		buf.append("    public void foo() {\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected1= buf.toString();
		
		assertRefactoringResultAsExpected(refactoring, new String[] {expected1});
	}
	
	public void testCombination02() throws Exception {
		IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E1 {\n");
		buf.append("    public void foo() {\n");
		buf.append("        if (true)\n");