code: public function load($name)
      {
          if ($name instanceof Twig_TemplateWrapper) {
              return $name;
          }
  
          if ($name instanceof Twig_Template) {
              return new Twig_TemplateWrapper($this, $name);
          }
  
          return new Twig_TemplateWrapper($this, $this->loadTemplate($name));
      }
docs: Loads a template.
  
  @param string|Twig_TemplateWrapper|Twig_Template $name The template name
  
  @throws Twig_Error_Loader  When the template cannot be found
  @throws Twig_Error_Runtime When a previously generated cache is corrupted
  @throws Twig_Error_Syntax  When an error occurred during compilation
  
  @return Twig_TemplateWrapper