ParagonIE\CSPBuilder\CSPBuilder::enableOldBrowserSupport PHP Method

    public function enableOldBrowserSupport() : self
    {
        $this->needsCompile = $this->supportOldBrowsers !== true;
        $this->supportOldBrowsers = true;
        return $this;
    }

 /**
  * Whether or not support old browsers (e.g. safari).
  * 
  * @param bool $support
  * 
  * @return self
  */
 public function supportOldBrowsers($support = true)
 {
     if ($support) {
         $this->csp->enableOldBrowserSupport();
     } else {
         $this->csp->disableOldBrowserSupport();
     }
     return $this;
 }