如何把groovy对象的全部属性取出，无需逐个访问

class why{
def name ="why"
def age = 15
def run() {
println 'Groovy world!'

}
public static void main(String[] args)
{
def t =  new why()
t.run()
def mapProperties = t.getProperties()
mapProperties.remove('class')//默认有自带class属性，移除减少数据传输量
println(mapProperties)
}
}