Bug 85717 [quick fix] 5.0 types suggested in 1.4 project
20050217 In statements like buf2.append("xxx"); //$NON-NLS-1$ Enum and Annotation are suggested for the unresolved buf
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/UnresolvedElementsSubProcessor.java
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, cu, rewrite, 8, image);
			proposals.add(proposal);				
		}
		
		IMethodBinding methodDecl= methodRef.getMethodDeclaration();
		ITypeBinding declaringType= methodDecl.getDeclaringClass();
		
		
		if (!declaringType.isFromSource()) {
			return;
		}
		ICompilationUnit targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, declaringType);
		if (targetCU != null) {
			boolean isDifferentCU= !cu.equals(targetCU);
			
			if (isImplicitConstructor(methodDecl, targetCU)) {
				return;
			}
			
			ChangeDescription[] changeDesc= new ChangeDescription[argTypes.length];
			ITypeBinding[] changeTypes= new ITypeBinding[diff];
			for (int i= diff - 1; i >= 0; i--) {
				int idx= indexSkipped[i];
				Expression arg= (Expression) arguments.get(idx);
				String name= arg instanceof SimpleName ? ((SimpleName) arg).getIdentifier() : null;
				ITypeBinding newType= Bindings.normalizeTypeBinding(argTypes[idx]);
				if (newType == null) {
					newType= astRoot.getAST().resolveWellKnownType("java.lang.Object"); 
				}
				if (!ASTResolving.isUseableTypeInContext(newType, methodDecl, false)) {