code: async function registerAccount(options) {
      options = options || {};
      const atlasClient = options.atlasClient || await AtlasClient.factory();
      const name = options.name || defaultName;
      const registrationId = libsignal.keyhelper.generateRegistrationId();
      const password = generatePassword();
      const signalingKey = generateSignalingKey();
      const response = await atlasClient.fetch('/v1/provision/account', {
          method: 'PUT',
          json: {
              signalingKey: signalingKey.toString('base64'),
              supportsSms: false,
              fetchesMessages: true,
              registrationId,
              name,
              password
          }
      });
      const addr = response.userId;
      const username = `${addr}.${response.deviceId}`;
      const identity = libsignal.keyhelper.generateIdentityKeyPair();
      await storage.clearSessionStore();
      await storage.removeOurIdentity();
      await storage.removeIdentity(addr);
      await storage.saveIdentity(addr, identity.pubKey);
      await storage.saveOurIdentity(identity);
      await storage.putState('addr', addr);
      await storage.putState('serverUrl', response.serverUrl);
      await storage.putState('deviceId', response.deviceId);
      await storage.putState('name', name);
      await storage.putState('username', username);
      await storage.putState('password', password);
      await storage.putState('registrationId', registrationId);
      await storage.putState('signalingKey', signalingKey);
      const sc = new SignalClient(username, password, response.serverUrl);
      await sc.registerKeys(await sc.generateKeys());
  }
docs: Create a new identity key and create or replace the signal account.
  Note that any existing devices asssociated with your account will be
  purged as a result of this action.  This should only be used for new
  accounts or when you need to start over.
  
  @param {Object} [options]
  @param {string} [options.name] - The public name to store in the signal server.
  @param {AtlasClient} [options.atlasClient]