src/core/Headers.php
public function run(): void
    {
        $this->isRan = true;
        foreach ($this->getAll() as $header) {
            header($header);
        }
    }
public function run(): void
    {
        $this->isRan = true;
        foreach ($this->getAll() as $header) {
            header($header);
        }
    }
The main execution method. It sets all added headers into the page.
@return void.