src/vs/workbench/services/workingCopy/common/workingCopyHistoryService.ts/WorkingCopyHistoryService/removeAll
class WorkingCopyHistoryService:	async removeAll(token: CancellationToken): Promise<void> {
		const historyHome = await this.localHistoryHome.p;
		if (token.isCancellationRequested) {
			return;
		}

		// Clear models
		this.models.clear();

		// Remove from disk
		await this.fileService.del(historyHome, { recursive: true });

		// Events
		this._onDidRemoveEntries.fire();
	}