code: /*
   * The contents of this file are subject to the terms
   * of the Common Development and Distribution License
   * (the "License").  You may not use this file except
   * in compliance with the License.
   * 
   * You can obtain a copy of the license at
   * https://jwsdp.dev.java.net/CDDLv1.0.html
   * See the License for the specific language governing
   * permissions and limitations under the License.
   * 
   * When distributing Covered Code, include this CDDL
   * HEADER in each file and include the License file at
   * https://jwsdp.dev.java.net/CDDLv1.0.html  If applicable,
   * add the following below this CDDL HEADER, with the
   * fields enclosed by brackets "[]" replaced with your
   * own identifying information: Portions Copyright [yyyy]
   * [name of copyright owner]
   */
  package com.sun.xml.xsom.impl;
  
  import com.sun.xml.xsom.XSContentType;
  import com.sun.xml.xsom.XSParticle;
  import com.sun.xml.xsom.XSSimpleType;
  import com.sun.xml.xsom.visitor.XSContentTypeFunction;
  import com.sun.xml.xsom.visitor.XSContentTypeVisitor;
  import com.sun.xml.xsom.visitor.XSFunction;
  import com.sun.xml.xsom.visitor.XSVisitor;
  
  /**
   * 
   * @author
   *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
   */
  public class EmptyImpl extends ComponentImpl implements ContentTypeImpl {
      public EmptyImpl() { super(null,null,null,null); }
      
      public XSSimpleType asSimpleType()  { return null; }
      public XSParticle asParticle()      { return null; }
      public XSContentType asEmpty()      { return this; }
      
      public Object apply( XSContentTypeFunction function ) {
          return function.empty(this);
      }
      public Object apply( XSFunction function ) {
          return function.empty(this);
      }
      public void visit( XSVisitor visitor ) {
          visitor.empty(this);
      }
      public void visit( XSContentTypeVisitor visitor ) {
          visitor.empty(this);
      }
      
      public XSContentType getContentType() { return this; }
  }