toStringNull
fun toStringNull(minScore: Double, maxScore: Int, decimals: Int = 1, removeTrailingZeros: Boolean = true, decimalChar: Char = '.'): String?(source)
Formats the rating to a human readable format (with no rounding)
However it may also return null if the score is less than the minimum score, this is to avoid 0.0/10.0 in case of default = 0