assertEquals(1, dc.getContributors().length);
assertEquals("Contributor1", dc.getContributors()[0]);
dc.removeContributor("Contributor1");
assertNull(dc.getContributors());
dc.addContributor("Contributor1");
assertEquals(1, dc.getContributors().length);
dc.addContributor("Contributor2");
assertEquals(2, dc.getContributors().length);
assertFalse(dc.removeContributor("DoesNotExist"));
assertTrue(dc.removeContributor("Contributor1"));