getLastModifiedTime

inline fun Path.getLastModifiedTime(vararg options: LinkOption): FileTime(source)

import kotlin.io.path.Path
import kotlin.io.path.getLastModifiedTime
import java.nio.file.LinkOption

fun main() {
    val path = Path("example.txt")          // path to your file
    val lastModified = path.getLastModifiedTime()   // default: follow symbolic links
    println("Last modified time of $path: $lastModified")
}