src/vs/workbench/contrib/debug/browser/loadedScriptsView.ts/BaseTreeItem/getLabel
class BaseTreeItem:	getLabel(separateRootFolder = true): string {
		const child = this.oneChild();
		if (child) {
			const sep = (this instanceof RootFolderTreeItem && separateRootFolder) ? ' • ' : posix.sep;
			return `${this._label}${sep}${child.getLabel()}`;
		}
		return this._label;
	}