public static IntegerGene of(final int min, final int max) {
		return of(random().nextInt(min, max), min, max);
	}
Create a new random {@code IntegerGene}. It is guaranteed that the value of
the {@code IntegerGene} lies in the interval {@code [min, max)}.

@param min the minimal valid value of this gene (inclusively).
@param max the maximal valid value of this gene (exclusively).
@return a new random {@code IntegerGene}
@throws IllegalArgumentException if {@code max} is greater than
        or equal to {@code min}
jenetics/src/main/java/io/jenetics/IntegerGene.java