refresh_info
Description:
[ Version ( since = "3.2" ) ]
public async bool refresh_info (int io_priority, Cancellable? cancellable = null) throws Error
  public async bool refresh_info (int io_priority, Cancellable? cancellable = null) throws Error
Asynchronously synchronizes a folder's summary with its backing store.
When the operation is finished, callback will be called. You can then call refresh_info.end to get the
       result of the operation.
Parameters:
| this | 
           a Folder  | 
      
| io_priority | 
           the I/O priority of the request  | 
      
| cancellable | 
           optional Cancellable object, or null  | 
      
| callback | 
           a TaskReadyCallback to call when the request is satisfied  | 
      
| user_data | 
           data to pass to the callback function  |