Delete empty blob directory

I want to delete some blob directory using Azure Java SDK (https://docs.microsoft.com/en-us/java/api/com.microsoft.azure.storage.blob.cloudblobdirectory?view=azure-java-legacy). Storage account is ADLS Gen2.

I know the concept that to delete directory I need to delete all blobs "inside" it but still - even if I delete all blobs, in Azure Storage Explorer I can see empty directories, and I want to get rid of them also.

I have tried such code and it works great but I'm stuck when it comes to delete empty blob directory:

val storageAccountName = "<account-name>"
val containerName = "<container-name>"
val sas = "<sas>"
val path = "copyTest/testDirectory"

val container: CloudBlobContainer = CloudStorageAccount
  .parse(s"DefaultEndpointsProtocol=https;AccountName=${storageAccountName};SharedAccessSignature=${sas};EndpointSuffix=core.windows.net")
  .createCloudBlobClient().getContainerReference(containerName)


def deleteBlobs(blobs: Iterable[ListBlobItem]): Unit = {
  for (blob <- blobs) {
    blob match {
      case blockBlob: CloudBlockBlob => {
        logger.info("blob")
        logger.info(blockBlob.getUri.getPath)
        blockBlob.delete()
      }
      case blobDirectory: CloudBlobDirectory => {
        if (blobDirectory.listBlobs.iterator().hasNext) {
          logger.info("blobDirectory not empty")
          logger.info(blobDirectory.getUri.getPath)
          val blobsFromDir = container.listBlobs(blobDirectory.getUri.getPath.replace(containerName + "/", ""))
          import scala.jdk.CollectionConverters._
          deleteBlobs(blobsFromDir.asScala)
        } else {
          logger.info("blobDirectoryEmpty")
          logger.info(blobDirectory.getUri.getPath)
          
//           blobDirectory.delete() #1
//           blob.delete() #2
//           val targetDirectory = container.getBlockBlobReference(
blobDirectory.getUri.getPath.replaceFirst(destContainerName + "/", "").substring(1)) #3
//          val targetDirectory = destContainer.getDirectoryReference(
blobDirectory.getUri.getPath.replaceFirst(destContainerName + "/", "").substring(1)) #4
//          targetDirectory.delete()
        }
      }
      case _ => logger.info(s"Unknown blob type")
    }
  }
}

import scala.jdk.CollectionConverters._
val blobs = container.listBlobs(path).asScala
deleteBlobs(blobs)

I get response:

#1

#2

#3

#4

Any ideas how can improve my function?