如何在Mule 4中选择对象数组中的最后一个重复对象

<set-variable variableName="objectArray" value="#[[
    {id: 1, name: 'object1'},
    {id: 2, name: 'object2'},
    {id: 3, name: 'object3'},
    {id: 2, name: 'object2'},   // 重复对象
    {id: 4, name: 'object4'}
]]" />

%dw 2.0
output application/json

var objectArray = #[{
    id: 1,
    name: 'object1'
}, {
    id: 2,
    name: 'object2'
}, {
    id: 3,
    name: 'object3'
}, {
    id: 2,
    name: 'object2'   // 重复对象
}, {
    id: 4,
    name: 'object4'
}]

var lastDuplicate = objectArray filter ((item, index) -> item in objectArray[index+1..]) 
                         lastBy $$
---
lastDuplicate