Magento getModel with or without parameters

In Magento you can load your model with getModel. You can optionally pass parameters to the model class constructor. All you need to do is:

Mage::getModel('model_class', 'arguments_as_array_if_any');

For example: I want to load Data.php model from: https://github.com/dbashyal/Magento-General-Module-Extension

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