<?php
 
public function someController1($id)
{
	private $fileGateway;
 
	$file = $this->fileGateway->getFile($id);
	if (!isset($file)) {
		throw new notFoundException();
	}
}
 
public function someController2($id)
{
	private $fileGateway;
 
	try {
		$file = $this->fileGateway->getFile($id);
	} catch (Exception $e) {
		throw new notFoundException();
	}
}
 
public function someFileGateway1()
{
	public function getFile($id) {
		if (!$this->isFileExist($id)) {
			return null;
		}
	}
}
 
public function someFileGateway2()
{
	public function getFile($id) {
		if (!$this->isFileExist($id)) {
			throw new Exception();
		}
	}
}
 

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