@Override
	public boolean equals(final Object obj) {
		return obj != null &&
			getClass() == obj.getClass() &&
			Objects.equals(_lengthRange, ((VariableChromosome<?>)obj)._lengthRange) &&
			super.equals(obj);
	}
Return the allowed length range of the chromosome. The minimum value of
the range is included and the maximum value is excluded.

@return the allowed length range of the chromosome
jenetics/src/main/java/io/jenetics/VariableChromosome.java