How to use the appium-idb function in appium-idb

if (this.opts.customSSLCert) {
        if (await hasSSLCert(this.opts.customSSLCert, this.opts.udid)) {
          log.info(`SSL cert '${_.truncate(this.opts.customSSLCert, {length: 20})}' already installed`);
        } else {
          log.info(`Installing ssl cert '${_.truncate(this.opts.customSSLCert, {length: 20})}'`);
          await shutdownSimulator(this.opts.device);
          await installSSLCert(this.opts.customSSLCert, this.opts.udid);
          log.info(`Restarting Simulator so that SSL certificate installation takes effect`);
          await this.startSim();
          this.logEvent('customCertInstalled');
        }
      }
      if (this.opts.launchWithIDB && this.isSimulator()) {
        try {
          const idb = new IDB({udid});
          await idb.connect();
          this.opts.device.idb = idb;
        } catch (e) {
          log.info(`idb will not be used for Simulator interaction. Original error: ${e.message}`);
        }
      }

      this.logEvent('simStarted');
      if (!isLogCaptureStarted) {
        // Retry log capture if Simulator was not running before
        await startLogCapture();
      }
    }

    if (this.opts.app) {
      await this.installAUT();