in src/eventSubscription/commands/mock/previewEvents.ts [11:15]
export async function previewEvents(uri: Uri): Promise<void> {
const [events]: [{}[], IMockEventGenerator] = await generateEvents(uri);
const viewColumn: number | undefined = window.activeTextEditor !== undefined && window.activeTextEditor.viewColumn !== undefined ? window.activeTextEditor.viewColumn + 1 : undefined;
await fsUtils.showNewFile(JSON.stringify(events, undefined, 2), 'eventsPreview', '.json', viewColumn);
}