ProcessingElementInputDescriptor input = new ProcessingElementInputDescriptor("input");
TupleDType tupleIn = new TupleDType();
SimpleDType d = new SimpleDType();
d.setRepresents(new SimpleSemanticType("", "tempInKelvin"));
tupleIn.addElement("min", d);
tupleIn.addElement("max", d);
input.setDType(new CollectionDType(tupleIn, CollectionDType.LIST));
TupleDType tupleOut = new TupleDType();
d = new SimpleDType();
d.setRepresents(new SimpleSemanticType("", "tempInCelsius"));
tupleOut.addElement("min", d);