code: def serialize_params(self, params, complex=False):
          
          if complex:
              # See climata.acis for an example implementation
              raise NotImplementedError("Cannot serialize %s!" % params)
          else:
              # Simpler queries can use traditional URL parameters
              return {
                  self.get_url_param(key): ','.join(val)
                  for key, val in params.items()
              }
docs: Serialize parameter names and values to a dict ready for urlencode()