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OpenCart : Create a Model

To make  a Model  
class Model<foldername><filename with out extention> extends Model{
  
   public function methode(){
    .....
    } 
} 
We can call a model from controller using 

$this->load->model('<folder>/<filename with out extention>');

And after that we can call the method like below
$this->model_<folder>_<filename with out extention>->methode();

 The Method should be public
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