我试图为Color(androidx.compose.ui.graphics)类创建TypeConverter，但在coompile时，room失败并出现错误

error: Class is referenced as a converter but it does not have any converter methods.
public final class ColorConverter {
            ^

字符串
颜色类（编写中）

value class Color(val value: ULong) {
...
}

型
ColorConverter实现

object ColorConverter {
    @JvmStatic
    @TypeConverter
    fun toLong(color: Color): Long = color.value.toLong()
    @JvmStatic
    @TypeConverter
    fun toColor(value: Long): Color = Color(value)
}

型
我也在DB中声明了

@TypeConverters(ColorConverter::class)

型