import com.apple.internal.jobjc.generator.utils.NTypeMerger.MergeFailed; //导入依赖的package包/类
public static Type merge(Type a, Type b) throws MergeFailed{
    if(a!=null && b==null) return a;
    if(a==null && b!=null) return b;
    if(QA.bothNullOrEquals(a, b)) return a;
    if (exceptions.containsKey(a.name)) return exceptions.get(a.name); // HACK BS bug
    if(a.name != null && b.name != null && !a.name.equals(b.name)){
        System.out.println("Merging:");
        System.out.println("\ta.....: " + a.toString());
        System.out.println("\tb.....: " + b.toString());
    }
    final Type merged = new Type(NTypeMerger.inst().mergeName(a.name, b.name),
            NTypeMerger.inst().merge(a.type32, b.type32),
            NTypeMerger.inst().merge(a.type64, b.type64));
    if(a.name != null && b.name != null && !a.name.equals(b.name)){
        System.out.println("\tmerged: " + merged.toString());
    }
    return merged;
}