/** INTERNAL Generate the EclipseLink expression for this node */
 public Expression generateExpression(GenerationContext context) {
   Expression whereClause = getFindIn().generateExpression(context);
   Expression findExpr = getFind().generateExpression(context);
   if (startPosition != null) {
     whereClause = whereClause.locate(findExpr, getStartPosition().generateExpression(context));
   } else {
     whereClause = whereClause.locate(findExpr);
   }
   return whereClause;
 }