* @throws IncorrectDistributionParameterException if mean value is invalid for this distribution
*/
@Override
public void setMean(double meanValue) throws IncorrectDistributionParameterException {
if (meanValue <= 0 || Double.isInfinite(meanValue)) {
throw new IncorrectDistributionParameterException("Mean value must be finite and greater than zero");
}
k = meanValue * (alpha - 1) / alpha;
}