code: public function getDefaultStrategy($name)
      {
          // disable string callables to avoid calling a function named html or js,
          // or any other upcoming escaping strategy
          if (!is_string($this->defaultStrategy) && false !== $this->defaultStrategy) {
              return call_user_func($this->defaultStrategy, $name);
          }
  
          return $this->defaultStrategy;
      }
docs: Gets the default strategy to use when not defined by the user.
  
  @param string $name The template name
  
  @return string|false The default strategy to use for the template