public function registerShortCode($tag, $callback)
    {
        if (is_callable($callback)) {
            $this->shortCodesTags[$tag] = $callback;
        }

        return $this;
    }
public function registerShortCode($tag, $callback)
    {
        if (is_callable($callback)) {
            $this->shortCodesTags[$tag] = $callback;
        }

        return $this;
    }
public function registerShortCode ( $ tag , $ callback ) { if ( is_callable ( $ callback ) ) { $ this -> shortCodesTags [ $ tag ] = $ callback ; } return $ this ; }
Register short code

@param string   $tag      tag name
@param callable $callback callback that will be triggered when tag will be processed

@return $this
Register short code