code: public String getDescription(FeatureDescriptor feature) {
          String description = feature.getShortDescription();
          
          if (description == null || 
              description.equals(feature.getDisplayName())) {
              
              description = "";
          }
  
          return description;
      }
docs: Returns the FeatureDescriptor's shortDescription or "" if the
  shortDescription is the same as the displayName.