我需要从特定字段获取值并使用弹性搜索显示它而不显示任何其他细节。以下是一些示例数据：
hits: {
total: 1160
max_score: 1
hits: [
{
_index: restaurants
_type: restaurant
_id: beijing-express-dafna
_score: 1
_source: {
key: beijing-express-dafna
misc: {
latLong: 25.3258600000,51.5308300000
closedOrOpen:
payement:
openTime: 10 AM to 10 PM
cost: QR 80 for two people (approx.)
address: Food Court, Doha City Center Mall, Dafna, DohaQatar
rating: 3.3
}
name: Beijing Express Restaurant, Dafna
features: [
Bar Not Available
Serves Non Veg
Dine-In Available
No Home Delivery
]
cuisines: [
Chinese
]
__v: 0
}
}
}
我只需要键值，这样我该怎么办？