Consider the following two program fragments.
The first one eliminates all attributes from 
elements.
For example:

<xsd:element name="purchaseOrder" type="PurchaseOrderType"/>  
is translated to:
<xsd:element/>  

The second one eliminates name space references 
(NSRef-objects)
from complex types. For example:

<xsd:complexType name="PurchaseOrderType">     
is translated to:
<complexType name="PurchaseOrderType">

    System.out.println(" Eliminate attributes from elements ");
    cg2.traverse(s,"from Schema to Element", new Visitor() {
      void before(Element host){
	System.out.println(" Element found ");
	host.set_attrs(new AttrValue_List());
      }
    });
    System.out.println("========");
    System.out.println(" Eliminate name space refs from complex types ");
    cg2.traverse(s,"from Schema to ComplexType", new Visitor() {
      void before(ComplexType host){
	System.out.println(" ComplexType found ");
	host.set_prefixS(null);
      }
    });