if (paramConfig != null) {
                parameter.setExpression(paramConfig.getValue(null));
                parameter.setDefaultValue(paramConfig.getAttribute("default-value"));
            }

            parameters.add(parameter);
        }

        mojo.setParameters(parameters);

        // TODO this should not need to be handed off...

                try {
                    value = expressionEvaluator.evaluate(expression);

                    if (value == null) {
                        value = config.getAttribute("default-value", null);
                    }
                } catch (ExpressionEvaluationException e) {
                    String msg = "Error evaluating the expression '" + expression + "' for configuration value '"