class ExampleController { private $dataContainer; function __construct() { $this->loadDataContainer('example_data'); } function exampleMethod() { $data = $this->dataContainer->getData(); // code to manipulate data } private function loadDataContainer($dataName) { // code to load data container with name $dataName $this->dataContainer = new DataContainer($data); } }In this example, the loadDataContainer method is used within the constructor of a controller to load a data container with the name 'example_data'. The data within the container can then be accessed within any method of the controller. It is difficult to determine the package library without more context, but it is possible that the DataContainer class is part of the package library being used.