code: private Object convertStringToSingleValue(String rawValue, ExtendedAttributeDefinition attrDef, EvaluationContext context,
                                                boolean ignoreWarnings) throws ConfigEvaluatorException {
          String value = processString(rawValue, attrDef, context, ignoreWarnings);
          return evaluateString(value, attrDef, context);
      }
docs: Process and evaluate a raw String value.