code: public static Builder builder() {
      return new AutoValue_MapboxIsochrone.Builder()
        .baseUrl(Constants.BASE_API_URL)
        .user(IsochroneCriteria.PROFILE_DEFAULT_USER);
    }
docs: Build a new {@link MapboxIsochrone} object with the initial value set for
  {@link #baseUrl()}.
  
  @return a {@link MapboxIsochrone.Builder} object for creating this object
  @since 4.6.0