为什么Firestore会提供：即使没有冲突，也会发现名称错误的冲突吸气剂？

Question

我尝试了类似firestore-found-conflicting-getters-for-name-istext之类的问题，但没有帮助，我的实际错误是
Found conflicting getters for name getRatingDetail on class UserRatingSong
我的班级结构是这样的

interface UserRating<T : Rating> {
    val ratingDetail: T
    val userDetail: User
}  
data class UserRatingSong(override val ratingDetail: SongRating,override val userDetail: User) : UserRating<SongRating> {
    constructor() : this(SongRating(), User())
}  
interface Rating {
    var averageOfCategories: Float
}  

data class SongRating(override var averageOfCategories: Float,var singerRating: Float,var musicRating: Float,var lyricsRating: Float) : Rating {
    constructor() : this(0f, 0f, 0f, 0f)
}  
data class User(val userName: String, val userId: String, val profilePic: String) {
    constructor() : this("", "", "")
}

尝试添加新评分时出现此错误

fun addRating(userRating:UserRatingSong){
    firestore.collection("myCollection")
                .document("docId")
                .collection("userRatings")
                .document(userRating.userDetail.userId)
                .set(userRating)//error occurs here
}  

由于我检查过任何类成员都不具有相似的名称，所以我什至还尝试更改ratingDetail字段名称，但更改后的字段名称也遇到相同的错误