Detect Symbolic link in Jenkins

symlinkFile.groovy

// This snippet causes a java.io.NotSerializableException: sun.nio.fs.UnixPath
// Not sure why because I use @NonCPS
import java.nio.file.Path
import java.nio.file.Paths
import java.nio.file.Files

Path gradlePropertiesPath = Paths.get('/localdisk/jenkins/gradle/gradle.properties')

node() {
    symlinkFile(gradlePropertiesPath)
    echo "Done"
}

@NonCPS
void symlinkFile(Path filePath) {
    // If the symlink already exists, there is nothing to do
    if (Files.readSymbolicLink(filePath)) {
        return
    }
}