code: public void shallowCopy(ITuple tupleDest) {
  		for(Field field: this.getSchema().getFields()) {
  			tupleDest.set(field.getName(), this.get(field.getName()));
  		}
  	}
docs: Simple shallow copy of this Tuple to another Tuple.
  
  @param tupleDest The destination Tuple (should have the same Schema or a super-set of it).