mount. Returns one or
more textual identifiers of well-known content types (typically
prefixed with "x-content/"), e.g. x-content/image-dcf for camera
memory cards. See the shared-mime-info (http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec)
specification for more on x-content types.gMountGuessContentType(object, force.rescan, cancellable = NULL, callback, user.data = NULL)objectGMountforce.rescancancellableGCancellable object, NULL to ignorecallbackuser.datacallbackgMountGuessContentTypeSync for the synchronous version), and
is finished by calling gMountGuessContentTypeFinish with the
mount and GAsyncResult data returned in the callback.
Since 2.18