[ Version ( since = "3.18" ) ]
public async bool refresh (string? display_name, Cancellable? cancellable) throws Error
Asynchronously starts refresh of the this.
This means to access the server and search it for available sources. The this shows a feedback and a Cancel button during the operation.
The display_name is used only if the this wasn't created with an
Source and it's shown in the password prompts, if there are required any.
When the operation is finished, callback will be called. You can then call refresh.end to get
the result of the operation.
| this | |
| display_name |
optional display name to use for scratch sources |
| 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 |