source: class BusinessDataTest {
  
    @Test
    public void transform() throws Exception {
  
target:     final Map<String, Integer> businessData = new HashMap<>();
      businessData.put("foo", 1);
      businessData.put("bar", null);
  
      final BusinessData data = new BusinessData(businessData);
  
      Map<String, Object> variables = data.toVariables();
  
      assertThat(variables.get("foo")).isEqualTo(1);
      assertThat(variables.get("bar")).isNull();
    }
  
  }