如何通过Scala有效地检查MongoDB集合是否为空？

import org.mongodb.scala._
import org.mongodb.scala.bson.collection.immutable.Document

// 创建MongoDB连接
val mongoClient: MongoClient = MongoClient()
val database: MongoDatabase = mongoClient.getDatabase("your_database_name")
val collection: MongoCollection[Document] = database.getCollection("your_collection_name")

// 检查集合是否为空
val count: Long = collection.countDocuments().results().headOption.getOrElse(0L)
if (count == 0) {
  println("集合为空")
} else {
  println("集合不为空")
}

// 关闭连接
mongoClient.close()