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
ICleanUp cleanUp= new UnusedCodeCleanUp(UnusedCodeCleanUp.REMOVE_UNUSED_PRIVATE_TYPES);
		
		setOptions(cleanUp);
		
		CompilationUnit[] units= compile(new ICompilationUnit[] {cu1, cu2, cu3});
		assertNumberOfProblems(units[0], 1);
		assertNumberOfProblems(units[1], 2);
		assertNumberOfProblems(units[2], 1);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E1 {\n");
		buf.append("}\n");
		String expected1= buf.toString();
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E2 {\n");
		buf.append("    public class E2Inner3 {}\n");
		buf.append("}\n");
		String expected2= buf.toString();
		
		buf= new StringBuffer();
		buf.append("package test2;\n");
		buf.append("public class E3 {\n");
		buf.append("    public class E3Inner {\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected3= buf.toString();