code: def venuegroup_update(group_id, options={})
        response = connection.post do |req|
          req.url "venuegroups/#{group_id}/update", options
        end
        return_error_or_body(response, response.body.response.venueGroup)
      end
docs: Updates a venue group. At least one of the name and venueId parameters must be specified.
   @param [String] group_id - required The ID of the venue group to modify
   @param [Hash]  options
   @option options String :name - If specified, the new name to give to the group.
   @option options String :venueId - If specified, a comma-delimited list of venue IDs that will become the new set of venue IDs for the group.