Finishes unmounting a mount. If any errors occurred during the operation, @error will be set to contain the errors and %FALSE will be returned.
a #GAsyncResult.
%TRUE if the mount was successfully unmounted. %FALSE otherwise.
GException on failure.
2.22
See Implementation
Finishes unmounting a mount. If any errors occurred during the operation, @error will be set to contain the errors and %FALSE will be returned.