fun Random.nextPrintableString(length: Int): String
Generates a String of length by calling nextPrintableChar
// Examples
val r = Random.Default
r.nextPrintableString(-10) // ""
r.nextPrintableString(0) // ""
r.nextPrintableString(1) // " ", "a", "Z", etc.
r.nextPrintableString(5) // "Ha Ha", "gens!", "[{-}]", etc.
Return
a given length String of random printable Chars