<?php

final class DemoFile
{
    private string $env;
    
    public function __construct()
    {
        $this->env = 'default';
    }
    
    public function getEnv(): string
    {
        return $this->env;
    }
    
    public static function create(string $env): self
    {
        $object = new self();
        $object->env = 'not default';
        return $object;
    }
}