getSessionToken (sessionToken) {
    if (sessionToken) {
      return store.save(this.SESSION_TOKEN_KEY, {
        sessionToken: sessionToken
      }).then(() => {
        return store.get(this.SESSION_TOKEN_KEY)
      })
    }
    return store.get(this.SESSION_TOKEN_KEY)
  }
### getSessionToken
@param {Object} sessionToken the currentUser object

When Hot Loading, the sessionToken  will be passed in, and if so,
it needs to be stored on the device.  Remember, the store is a
promise so, have to be careful.