Anyone used Room? Having issue with TypeConverter ...

# android

[hai]

Anyone used Room? Having issue with TypeConverter converting my java.util.date.

class DateTypeConverter {
    companion object {
        @TypeConverter
        fun fromTimestamp(value: Long?): Date? {
            return if (value == null) null else Date(value)
        }

        @TypeConverter
        fun dateToTimestamp(date: Date): Long {
            return date.time
        }
    }
}

and my compiler reporting:
DateTypeConverter.java:3: error: Class is referenced as a converter but it does not have any converter methods.
and my article entity looks like this:

@Entity(tableName = "articles")
data class ArticleDb(@ColumnInfo var articleId: String,
                     @ColumnInfo var date: Date) {
    @ColumnInfo
    @PrimaryKey(autoGenerate = true) var id: Long = 0
}

Any ideas whats wrong?