Forces an asynchronous write of all user-space buffered data for the given this.
For behaviour details see flush.
When the operation is finished callback will be called. You can then call flush_async.end
to get the result of the operation.
| this |
a OutputStream. |
| io_priority |
the io priority of the request. |
| cancellable |
optional Cancellable object, null to ignore. |
| callback |
a TaskReadyCallback to call when the request is satisfied |
| user_data |
the data to pass to callback function |