setBody() {
    var html = this.content
      .split(this.config.frontMatterSeperator)
      .splice(2)
      .join(this.config.frontMatterSeperator);
    if (this.html) {
      this.body = html;
    } else {
      if (this.config.markdownEngine) {
        this.body = this.config.markdownEngine(html);
      } else {
        var md = new Markdown();
        this.body = md.render(html);
      }
    }
  }
Set file body.
@method
@description
Sets the body of the file based on content after the front matter.