protected Mapper getMapperWithEL(String... mappingFiles) {
        DefaultELEngine elEngine = new DefaultELEngine(ELExpressionFactory.newInstance());

        return DozerBeanMapperBuilder.create()
                .withMappingFiles(mappingFiles)
                .withELEngine(elEngine)
                .withElementReader(new ExpressionElementReader(elEngine))
                .build();
    }
This class should be inherited by all functional tests
core/src/test/java/com/github/dozermapper/core/functional_tests/AbstractFunctionalTest.java