RoleConfigurationManager { public Collection<String> getRoles() { return roles; }  void readDashboardRolesConfig(@Observes @Initialized(ApplicationScoped.class) ServletContext sc); Collection<String> getRoles();  }
@Test public void testGetRoles() { System.out.println("getRoles"); Collection<String> result = instance.getRoles(); assertThat(result).isInstanceOf(Collection.class); }