RxFirebase按值搜索子级

Question

My JSON

我正在使用RxFirebase。如何通过值“名称”获取子级（例如5098）。

这是我的代码。

RxFirebaseDatabase.observeSingleValueEvent(
            remoteStObjectsDatabase.child("stobjekti").orderByChild("name").equalTo("TP-6220"),
            DataSnapshotMapper.listOf(StObject::class.java)
        )

data class StObject(
var address: String?,
var construction: String?,
var date_of_manufacture: String?,
var in_service_from: String?,
var name: String?,
var region_city: String?,
var technical_object: String,
var type: String?,
var x: String?,
var y: String?)