matches
Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0) 
infix fun CharSequence.matches(regex: Regex): Boolean
Returns true if this char sequence matches the given regular expression.
Platform and version requirements: JS (1.1) 
@DeprecatedSinceKotlin("1.6") fun String.matches(
    regex: String
): Boolean Deprecated: Use Regex.matches() instead
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    https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/matches.html