Unmounts a mount. This is an asynchronous operation, and is finished by calling gio.mount.Mount.unmountWithOperationFinish with the mount and #GAsyncResult data returned in the callback.
flags affecting the operation
a #GMountOperation or null to avoid user interaction.
optional #GCancellable object, null to ignore.
a #GAsyncReadyCallback, or null.
Unmounts a mount. This is an asynchronous operation, and is finished by calling gio.mount.Mount.unmountWithOperationFinish with the mount and #GAsyncResult data returned in the callback.