void RasterLayer::setRasterBrightnessMin(PropertyValue<float> value) {
    if (value == getRasterBrightnessMin())
        return;
    auto impl_ = mutableImpl();
    impl_->paint.template get<RasterBrightnessMin>().value = value;
    baseImpl = std::move(impl_);
    observer->onLayerChanged(*this);
}
void RasterLayer::setRasterBrightnessMin(PropertyValue<float> value, const optional<std::string>& klass) {
    if (value == getRasterBrightnessMin(klass))
        return;
    impl->paint.rasterBrightnessMin.set(value, klass);
    impl->observer->onLayerPaintPropertyChanged(*this);
}