inline fun Char.toLowerCase(): Char
Converts this character to lowercase.
inline fun String.toLowerCase(): String
Returns a copy of this string converted to lower case using the rules of the default locale.
inline fun String.toLowerCase(locale: Locale): String
Platform and version requirements: JVM
Returns a copy of this string converted to lower case using the rules of the specified locale.
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/to-lower-case.html