基于列表键输入提取地图内容

Question

我试图根据年龄列表输入将年龄作为地图元素，我尝试过以下代码但不能正常工作..

def people = [[name:'Bob', age: 32, gender: 'M'],[name:'john', age: 42, gender: 'M']]
def id = ["age"]
def age = people.subMap(id).values().flatten()

println age