public static CharacterChromosome of(final int length) {
		return of(DEFAULT_CHARACTERS, length);
	}
Create a new chromosome with the {@link CharacterGene#DEFAULT_CHARACTERS}
char set as valid characters.

@param length the {@code length} of the new chromosome.
@return a new {@code CharacterChromosome} with the given parameter
@throws IllegalArgumentException if the {@code length} is smaller than
        one.
jenetics/src/main/java/io/jenetics/CharacterChromosome.java