src/vs/base/browser/ui/tree/abstractTree.ts/TypeFilterController/updateFilterOnTypeTitleAndIcon
class TypeFilterController:	private updateFilterOnTypeTitleAndIcon(): void {
		if (this.filterOnType) {
			this.filterOnTypeDomNode.classList.remove(...Codicon.treeFilterOnTypeOff.classNamesArray);
			this.filterOnTypeDomNode.classList.add(...Codicon.treeFilterOnTypeOn.classNamesArray);
			this.filterOnTypeDomNode.title = localize('disable filter on type', "Disable Filter on Type");
		} else {
			this.filterOnTypeDomNode.classList.remove(...Codicon.treeFilterOnTypeOn.classNamesArray);
			this.filterOnTypeDomNode.classList.add(...Codicon.treeFilterOnTypeOff.classNamesArray);
			this.filterOnTypeDomNode.title = localize('enable filter on type', "Enable Filter on Type");
		}
	}