code: public double getEffectSize(final String method) {
          if ("d".equals(method)) {
              return getCohenD(baselineMetricPerDimension, testMetricPerDimension, false);
          } else if ("dLS".equals(method)) {
              return getCohenD(baselineMetricPerDimension, testMetricPerDimension, true);
          } else if ("pairedT".equals(method)) {
              return getEffectSizePairedT(baselineMetricPerDimension, testMetricPerDimension);
          }
          return Double.NaN;
      }
docs: Computes the effect size according to different methods: d and dLS are
  adequate for not paired samples, whereas pairedT is better for paired
  samples.
  
  @param method one of "d", "dLS", "pairedT"
  @return the effect size