Pressbooks\Container::get PHP Method

    static function get($var)
    {
        if (!static::$pimple) {
            throw new \LogicException('\\Pimple\\Container not set, call init() or setPimple() before using get().');
        }
        return static::$pimple[$var];
    }

 /**
  * Override based on Theme Options
  */
 protected function themeOptionsOverrides()
 {
     $sass = \Pressbooks\Container::get('Sass');
     if ($sass->isCurrentThemeCompatible(2)) {
         $extra = "/* Print Overrides */\n\$prince-image-resolution: 300dpi; \n";
     } else {
         $extra = "/* Print Overrides */\nimg { prince-image-resolution: 300dpi; } \n";
     }
     $scss = '';
     $scss = apply_filters('pb_pdf_css_override', $scss) . "\n";
     $scss = $sass->applyOverrides($scss, $extra);
     // Copyright
     // Please be kind, help Pressbooks grow by leaving this on!
     if (empty($GLOBALS['PB_SECRET_SAUCE']['TURN_OFF_FREEBIE_NOTICES_PDF'])) {
         $freebie_notice = __('This book was produced using Pressbooks.com, and PDF rendering was done by PrinceXML.', 'pressbooks');
         $scss .= '#copyright-page .ugc > p:last-of-type::after { display:block; margin-top: 1em; content: "' . $freebie_notice . '" }' . "\n";
     }
     $this->cssOverrides = $scss;
     // --------------------------------------------------------------------
     // Hacks
     $hacks = array();
     $hacks = apply_filters('pb_pdf_hacks', $hacks);
     // Append endnotes to URL?
     if ('endnotes' == $hacks['pdf_footnotes_style']) {
         $this->url .= '&endnotes=true';
     }
 }