code: public static Instances buildInstances(DataDictionary dataDict) {
          List<weka.core.Attribute> attributes = buildAttributes(dataDict);
  
          FastVector fastVector = new FastVector(attributes.size());
          for (weka.core.Attribute attribute : attributes) {
              fastVector.addElement(attribute);
          }
  
          return new Instances("instances", fastVector, attributes.size());
      }
docs: Creates a new {@link weka.core.Instances} instance from the attributes in a {@link org.dmg.pmml.DataDictionary PMML DataDictionary}.
  
  @param dataDict The {@link org.dmg.pmml.DataDictionary PMML DataDictionary} from which to build instances.
  @return A new {@link weka.core.Instances} instance.