source/php/PostTypes/Events.php
public function eventContent($content)
    {
        if (!is_singular($this->slug)) {
            return $content;
        }

        $custom_content = $this->getCustomContent();
        if ($custom_content) {
            $content = $custom_content;
        }

        return $content;
    }
public function eventContent($content)
    {
        if (!is_singular($this->slug)) {
            return $content;
        }

        $custom_content = $this->getCustomContent();
        if ($custom_content) {
            $content = $custom_content;
        }

        return $content;
    }
Replace content if occasion has custom content.
@param  string $content Content of the current post.
@return string