code: def _get_resources(self, args, params):
          
          resources = []
          disabled = []
          for resource in ['holoviews'] + list(Store.renderers.keys()):
              if resource in args:
                  resources.append(resource)
  
              if resource in params:
                  setting = params.pop(resource)
                  if setting is True and resource != 'matplotlib':
                      if resource not in resources:
                          resources.append(resource)
                  if setting is False:
                      disabled.append(resource)
  
          unmatched_args = set(args) - set(resources)
          if unmatched_args:
              display(HTML('<b>Warning:</b> Unrecognized resources %s'
                           % ', '.join(unmatched_args)))
  
          resources = [r for r in resources if r not in disabled]
          if ('holoviews' not in disabled) and ('holoviews' not in resources):
              resources = ['holoviews'] + resources
          return resources
docs: Finds the list of resources from the keyword parameters and pops
          them out of the params dictionary.