class BulkWriteResult {

  /**
   * Indicates whether this write result was ackowledged. If not, then all
   * other members of this result will be undefined.
   */
  acknowledged: Boolean optional;

  /**
   * Number of documents inserted.
   */
  insertedCount: Int64 required;

  /**
   * Map of the index of the operation to the id of the inserted document.
   */
  insertedIds: Map<Int64, any> optional;

  /**
   * Number of documents matched for update.
   */
  matchedCount: Int64 required;

  /**
   * Number of documents modified.
   */
  modifiedCount: Int64 required;

  /**
   * Number of documents deleted.
   */
  deletedCount: Int64 required;

  /**
   * Number of documents upserted.
   */
  upsertedCount: Int64 required;

  /**
   * Map of the index of the operation to the id of the upserted document.
   */
  upsertedIds: Map<Int64, any> required;

}