src/vs/workbench/services/extensions/browser/extensionUrlHandler.ts/ExtensionUrlHandler/garbageCollect
class ExtensionUrlHandler:	private garbageCollect(): void {
		const now = new Date().getTime();
		const uriBuffer = new Map<string, { timestamp: number, uri: URI }[]>();

		this.uriBuffer.forEach((uris, extensionId) => {
			uris = uris.filter(({ timestamp }) => now - timestamp < FIVE_MINUTES);

			if (uris.length > 0) {
				uriBuffer.set(extensionId, uris);
			}
		});

		this.uriBuffer = uriBuffer;
	}