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
buf.append("package test1;\n");
		buf.append("public class E2 {\n");
		buf.append("    String s1;\n");
		buf.append("    String s2= (String)s1;\n");
		buf.append("    public void foo(Integer i) {\n");
		buf.append("        Number n= (Number)i;\n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu2= pack1.createCompilationUnit("E2.java", buf.toString(), false, null);
		
		CleanUpRefactoring refactoring= new CleanUpRefactoring();
		refactoring.addCompilationUnit(cu1);
		refactoring.addCompilationUnit(cu2);
		
		ICleanUp cleanUp= new UnnecessaryCodeCleanUp(UnnecessaryCodeCleanUp.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");