@Override
	public void apply(final Builder<G, C> builder) {
		builder
			.selector(new WeaselSelector<>())
			.offspringFraction(1)
			.alterers(new WeaselMutator<>(_mutationProbability));
	}
Create a new weasel program setup with the <em>default</em> mutation
probability of {@code 0.05}.
jenetics.ext/src/main/java/io/jenetics/ext/WeaselProgram.java