/*
  * @see ASTVisitor#visit(ThisExpression)
  */
 public boolean visit(ThisExpression node) {
   if (node.getQualifier() != null) {
     node.getQualifier().accept(this);
     this.fBuffer.append("."); // $NON-NLS-1$
   }
   this.fBuffer.append("this"); // $NON-NLS-1$
   return false;
 }
 /*
  * @see ASTVisitor#visit(ThisExpression)
  */
 @Override
 public boolean visit(ThisExpression node) {
   typeRefFound(node.getQualifier());
   return false;
 }