initServices(arguments);
FieldWrapper fieldWrapper = new FieldWrapper();
Expression expression = (Expression) StandardExpressions.getExpressionParser(arguments.getConfiguration())
.parseExpression(arguments.getConfiguration(), arguments, element.getAttributeValue("fieldBuilder"));
String fieldBuilder = (String) expression.execute(arguments.getConfiguration(), arguments);
if (fieldBuilder != null) {
RuleBuilderFieldService ruleBuilderFieldService = ruleBuilderFieldServiceFactory.createInstance(fieldBuilder);
if (ruleBuilderFieldService != null) {
fieldWrapper = ruleBuilderFieldService.buildFields();