Backup constructor
      
      Backup({ 
    
    
- List<BackupFile> ? backupFiles,
- String? backupType,
- String? cluster,
- String? clusterUid,
- String? createTime,
- EncryptionInfo? encryptionInfo,
- String? engineVersion,
- String? expireTime,
- String? name,
- String? nodeType,
- int? replicaCount,
- int? shardCount,
- String? state,
- String? totalSizeBytes,
- String? uid,
Implementation
Backup({
  this.backupFiles,
  this.backupType,
  this.cluster,
  this.clusterUid,
  this.createTime,
  this.encryptionInfo,
  this.engineVersion,
  this.expireTime,
  this.name,
  this.nodeType,
  this.replicaCount,
  this.shardCount,
  this.state,
  this.totalSizeBytes,
  this.uid,
});