Polls a file of type MOUNTABLE.
If cancellable is not null, then the operation can be cancelled by triggering
the cancellable object from another thread. If the operation was cancelled, the error
g_io_error_cancelled will be returned.
When the operation is finished, callback will be called. You can then call
mount_mountable.end to get the result of the operation.
| this |
input File |
| cancellable |
optional Cancellable object, null to ignore |
| callback |
a AsyncReadyCallback to call when the request is satisfied, or null |
| user_data |
the data to pass to callback function |