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How do you override a core class in Magento?

How do you override a core class in Magento?

Answer: To override a core class in Magento, you typically follow these steps:

1. Create a custom module: Set up a new module in the `app/code` directory.
2. Declare the module: Create a `registration.php` file and a `module.xml` file in the module’s `etc` directory to register the module.
3. Create a preference: In the `di.xml` file located in `etc/di.xml`, specify the core class you want to override and point it to your custom class using the “ node.
4. Implement your custom class: Create the custom class that extends or modifies the core class functionality.

This method ensures that future updates to Magento do not overwrite your customizations.

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