getDependentIds example

$entity4->save();

    // Test getting $entity1's dependencies as configuration dependency objects.     $dependents = $config_manager->findConfigEntityDependencies('config', [$entity1->getConfigDependencyName()]);
    $this->assertFalse(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 does not have a dependency on itself.');
    $this->assertTrue(isset($dependents['config_test.dynamic.entity2']), 'config_test.dynamic.entity2 has a dependency on config_test.dynamic.entity1.');
    $this->assertTrue(isset($dependents['config_test.dynamic.entity3']), 'config_test.dynamic.entity3 has a dependency on config_test.dynamic.entity1.');
    $this->assertTrue(isset($dependents['config_test.dynamic.entity4']), 'config_test.dynamic.entity4 has a dependency on config_test.dynamic.entity1.');

    // Test getting $entity2's dependencies as entities.     $dependents = $config_manager->findConfigEntityDependenciesAsEntities('config', [$entity2->getConfigDependencyName()]);
    $dependent_ids = $this->getDependentIds($dependents);
    $this->assertNotContains('config_test:entity1', $dependent_ids, 'config_test.dynamic.entity1 does not have a dependency on config_test.dynamic.entity1.');
    $this->assertNotContains('config_test:entity2', $dependent_ids, 'config_test.dynamic.entity2 does not have a dependency on itself.');
    $this->assertContains('config_test:entity3', $dependent_ids, 'config_test.dynamic.entity3 has a dependency on config_test.dynamic.entity2.');
    $this->assertContains('config_test:entity4', $dependent_ids, 'config_test.dynamic.entity4 has a dependency on config_test.dynamic.entity2.');

    // Test getting node module's dependencies as configuration dependency     // objects.     $dependents = $config_manager->findConfigEntityDependencies('module', ['node']);
    $this->assertTrue(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 has a dependency on the Node module.');
    $this->assertTrue(isset($dependents['config_test.dynamic.entity2']), 'config_test.dynamic.entity2 has a dependency on the Node module.');
    $this->assertTrue(isset($dependents['config_test.dynamic.entity3']), 'config_test.dynamic.entity3 has a dependency on the Node module.');