getObjectManager(); // Use the object manager to create an instance of your class $myClass = $objectManager->create('MyVendor\MyModule\Model\MyClass'); // Use the object manager to retrieve an instance of another class $anotherClass = $objectManager->get('MyVendor\AnotherModule\Model\AnotherClass'); // Use the object manager to inject a dependency into your class $myClass->setAnotherClass($anotherClass);In this example, we're using Mage getObjectManager to create an instance of a class, retrieve an instance of another class, and inject a dependency into our first class. Package library: As mentioned earlier, Mage getObjectManager is a part of the package "magento/framework". This package provides a lot of the core functionality of Magento 2, including the object manager, dependency injection, and event handling.