code: def require_meta_and_content(self, content_handler, params, **kwargs):
          
          meta = {
              'params': params
          }
          content = content_handler(params, meta, **kwargs)
          meta['params'] = params
          return meta, content
docs: Require 'meta' and 'content' dictionaries using proper hander.
  
          Args:
              content_handler (callable): function that accepts
                  ``params, meta, **kwargs`` argument and returns dictionary
                  for ``content`` response section
              params (dict): dictionary of parsed resource parameters
              kwargs (dict): dictionary of values created from resource url
                  template
  
          Returns:
              tuple (meta, content): two-tuple with dictionaries of ``meta`` and
                  ``content`` response sections