ScheduledFileMessageUpdateParams constructor 
    
      
      ScheduledFileMessageUpdateParams(- {String? url, 
- String? fileName, 
- int? fileSize, 
- String? mimeType, 
- int? scheduledAt, 
- String? customType, 
- String? data, 
- String? mentionType, 
- List? mentionedUserIds, 
- AppleCriticalAlertOptions? appleCriticalAlertOptions, 
- PushNotificationDeliveryOption pushNotificationDeliveryOption = PushNotificationDeliveryOption.normal}
)Implementation
  ScheduledFileMessageUpdateParams({
  this.url,
  this.fileName,
  this.fileSize,
  this.mimeType,
  this.scheduledAt,
  this.customType,
  this.data,
  this.mentionType,
  this.mentionedUserIds,
  this.appleCriticalAlertOptions,
  this.pushNotificationDeliveryOption = PushNotificationDeliveryOption.normal,
});