Extends the DOM2
  DOMImplementation
   interface with factory methods to create 
    schema documents
Java binding:
package org.w3c.dom.abstractSchemas;
public interface DOMImplementationAS extends DOMImplementation {
    public ASModel createAS();
    public ASExternalModel createExternalAS();
}
IDL:
interface DOMImplementationAS : DOMImplementation {
  ASModel         createAS();
  ASExternalModel createExternalAS();
};