src/Application.php
public function getCssUrl()
    {
        if (isset($this->_cssUrl)) {
            return $this->_cssUrl;
        }
        $useTheme = !defined('OPENBIZ_USE_THEME') ? 0 : OPENBIZ_USE_THEME;
        $themeUrl = !defined('OPENBIZ_THEME_URL') ? OPENBIZ_APP_URL . "/themes" : OPENBIZ_THEME_URL;
        $themeName = $this->getCurrentTheme();
        if ($useTheme) {
            $this->_cssUrl = "$themeUrl/$themeName/css";
        } else {
            $this->_cssUrl = OPENBIZ_APP_URL . "/css";
        }
        return $this->_cssUrl;
    }
public function getCssUrl()
    {
        if (isset($this->_cssUrl)) {
            return $this->_cssUrl;
        }
        $useTheme = !defined('OPENBIZ_USE_THEME') ? 0 : OPENBIZ_USE_THEME;
        $themeUrl = !defined('OPENBIZ_THEME_URL') ? OPENBIZ_APP_URL . "/themes" : OPENBIZ_THEME_URL;
        $themeName = $this->getCurrentTheme();
        if ($useTheme) {
            $this->_cssUrl = "$themeUrl/$themeName/css";
        } else {
            $this->_cssUrl = OPENBIZ_APP_URL . "/css";
        }
        return $this->_cssUrl;
    }
Get CSS URL
@return string