src/vs/workbench/contrib/debug/browser/debugService.ts/DebugService/cancelTokens
class DebugService:	private cancelTokens(id: string | undefined): void {
		if (id) {
			const token = this.sessionCancellationTokens.get(id);
			if (token) {
				token.cancel();
				this.sessionCancellationTokens.delete(id);
			}
		} else {
			this.sessionCancellationTokens.forEach(t => t.cancel());
			this.sessionCancellationTokens.clear();
		}
	}