/** * Fill a builder with attribute values from the provided {@code PopulationSplit} instance. * Regular attribute values will be replaced with those from the given instance. * Absent optional values will not replace present values. * @param instance The instance from which to copy values * @return {@code this} builder for use in a chained invocation */ @CanIgnoreReturnValue public final Builder from(PopulationSplit instance) { Objects.requireNonNull(instance, "instance"); userPath(instance.getUserPath()); percentage(instance.getPercentage()); return this; }