code: public CMAPersonalAccessToken create(CMAPersonalAccessToken token) {
      final CMASystem sys = token.getSystem();
      token.setSystem(null);
  
      try {
        return service.create(token).blockingFirst();
      } finally {
        token.setSystem(sys);
      }
    }
docs: Create a new personal access token.
  <p>
  This method is the _only_ time you will see the personal access token value. Please keep
  it save after this call, because a {@link #fetchAll()} or a {@link #fetchOne(String)} will
  _not_ return it!
  
  @param token the token to be created on Contentful.
  @return the just created token, containing the access token string.