return c;
            }
            return value;
        };
    }

    protected List<String> getProjectPrefixes(ModelBuilderRequest request) {
        return request.getValidationLevel() >= ModelBuilderRequest.VALIDATION_LEVEL_MAVEN_4_0
                ? PROJECT_PREFIXES_4_0
                : PROJECT_PREFIXES_3_1;
    }

    protected List<ValueSource> createValueSources(