clearMaterialBanners method
Removes all the MaterialBanners currently in queue by clearing the queue and running normal exit animation on the current MaterialBanner.
Implementation
void clearMaterialBanners() {
if (_materialBanners.isEmpty || _materialBannerController!.isDismissed) {
return;
}
final ScaffoldFeatureController<MaterialBanner, MaterialBannerClosedReason> currentMaterialBanner = _materialBanners.first;
_materialBanners.clear();
_materialBanners.add(currentMaterialBanner);
hideCurrentMaterialBanner();
}