//target file name
val targetName = "targetName"
//target folder
val targetDir = Directory()

try {
    val fileInfo: FileInfo = smh.getFileInfo(
        name = targetName, 
        dir = targetDir,
        //historical version number
        historyId = 123456,
        //purpose (used to mark the usage scenario of the link)
        purpose = Purpose.PREVIEW
    )
} catch (e: Exception) {
    e.printStackTrace()
}