Proguard rule below does not work with data classes put inside a single .kt file

-keep class com.sample.app.data.data_source.local.entities.** { *; }

@Entity
data class AssetMinDataEntity(
    @PrimaryKey
    val id: String,
    val name: String,
    val symbol: String?,
    @ColumnInfo(name = "metrics")
    val metricsMinEntity: MetricsMinEntity
)

data class MetricsMinEntity(
    val marketDataEntity: MarketDataMinEntity = MarketDataMinEntity()
)

data class MarketDataMinEntity(
    val priceUsd: Double? = 0.0
)