如何在上面的地图例子中写一个DSL？这里是打印内部映射的键和值的插图。尝试此操作：

Here is an illustration of printing the keys and values of the inner map. Try this:

map1=new HashMap()
map2=new HashMap()
map2.put("1","one")
map1.put("map2",map2) 

map1.each{ entry1 ->
    def innerMap = entry1.value
    innerMap.each { entry2 ->
        println "key is ${entry2.key}"
        println "value is ${entry2.value}"
    }
}