void KisImageResizeCommand::undo()
{
    KisImageSP image = m_image.toStrongRef();
    if (!image) {
        return;
    }
    image->setSize(m_sizeBefore);
}
void KisImageResizeCommand::redo()
{
    KisImageSP image = m_image.toStrongRef();
    if (!image) {
        return;
    }
    image->setSize(m_sizeAfter);
}