src/org/nutz/lang/util/NutType.java
public static Type map(Type key, Type value) {
        return new NutType(Map.class, key, value);
    }
public static Type map(Type key, Type value) {
        return new NutType(Map.class, key, value);
    }
生成Map<key,value>形式的泛型Type

@param key
key的泛型
@param value
value的泛型
@return Map<key,value>形式的泛型Type