@Test
 public void delete() {
   assertEquals(1, envContentCurator.listAll().size());
   e.getEnvironmentContent().remove(envContent); // TODO
   envContentCurator.delete(envContent);
   assertEquals(0, envContentCurator.listAll().size());
 }
  @Test
  public void create() {
    envContent = envContentCurator.lookupByEnvironmentAndContent(e, c.getId());
    assertNotNull(envContent);

    e = envCurator.find(e.getId());
    assertEquals(1, e.getEnvironmentContent().size());

    assertEquals(1, envContentCurator.lookupByContent(owner, c.getId()).size());
  }