src/vs/base/browser/ui/tree/abstractTree.ts/FindWidget/mode
class FindWidget:	set mode(mode: TreeFindMode) {
		this.modeToggle.checked = mode === TreeFindMode.Filter;
		this.findInput.inputBox.setPlaceHolder(mode === TreeFindMode.Filter ? localize('type to filter', "Type to filter") : localize('type to search', "Type to search"));
	}