src/vs/workbench/contrib/debug/browser/loadedScriptsView.ts/BaseTreeItem/setSource
class BaseTreeItem:	setSource(session: IDebugSession, source: Source): void {
		this._source = source;
		this._children.clear();
		if (source.raw && source.raw.sources) {
			for (const src of source.raw.sources) {
				if (src.name && src.path) {
					const s = new BaseTreeItem(this, src.name);
					this._children.set(src.path, s);
					const ss = session.getSource(src);
					s.setSource(session, ss);
				}
			}
		}
	}