Finishes guessing content types of @mount. If any errors occurred
during the operation, @error will be set to contain the errors and
%FALSE will be returned. In particular, you may get an
%G_IO_ERROR_NOT_SUPPORTED if the mount does not support content
guessing.
Finishes guessing content types of @mount. If any errors occurred during the operation, @error will be set to contain the errors and %FALSE will be returned. In particular, you may get an %G_IO_ERROR_NOT_SUPPORTED if the mount does not support content guessing.