code: func (p *Engine) ExecuteRaw(src string, wr io.Writer, binding interface{}) (err error) {
  	set := pongo2.NewSet("", pongo2.DefaultLoader)
  	set.Globals = getPongoContext(p.Config.Globals)
  	tmpl, err := set.FromString(src)
  	if err != nil {
  		return err
  	}
  	return tmpl.ExecuteWriter(getPongoContext(binding), wr)
  }
docs: // ExecuteRaw receives, parse and executes raw source template contents
  // it's super-simple function without options and funcs, it's not used widely
  // implements the EngineRawExecutor interface