src/vs/workbench/contrib/debug/browser/loadedScriptsView.ts/SessionTreeItem/removePath
class SessionTreeItem:	removePath(source: Source): boolean {
		if (source.raw.path) {
			const leaf = this._map.get(source.raw.path);
			if (leaf) {
				leaf.removeFromParent();
				return true;
			}
		}
		return false;
	}