public function assets($assets, array $options = []): string
    {
        if (is_string($assets)) {
            return $this->assetEngine->assetFile($assets, $options);
        }

        return $this->assetEngine->assetFiles($assets, $options);
    }
public function assets($assets, array $options = []): string
    {
        if (is_string($assets)) {
            return $this->assetEngine->assetFile($assets, $options);
        }

        return $this->assetEngine->assetFiles($assets, $options);
    }
public function assets ( $ assets , array $ options = [ ] ) : string { if ( is_string ( $ assets ) ) { return $ this -> assetEngine -> assetFile ( $ assets , $ options ) ; } return $ this -> assetEngine -> assetFiles ( $ assets , $ options ) ; }
Render and compress assets content.

@param string|array $assets assets
@param array $options options

@return string minified content
Render and compress assets content .