Cache buster

cachebuster.php

interface CacheBuster
{
    /**
     * @return string version
     * @throws \NoVersionException
    */
    public function getVersion();
}

class MultipleCacheBuster
{
    public function __construct($cacheBusers)
    {
        $this->cacheBusers = $cacheBusers;
    }
    
    public function getVersion()
    {
        // loop, with a catch
    }
}

class WordPressCacheBusterBuilder
{
  public function __consruct($someEnvStuff)
  {
  }
  
  public function build()
  {
      $busters = [];
      
      if ($someEnvStuff) {
        $busters[] = new GitTagCacheBuster();
      }

      $busters[] = new ConstantValueCacheBuster(time()); // fallback
      
      return new MultipleCacheBuster($busters);
  }
}