code: func (api *Client) GetUsersInConversationContext(ctx context.Context, params *GetUsersInConversationParameters) ([]string, string, error) {
  	values := url.Values{
  		"token":   {api.token},
  		"channel": {params.ChannelID},
  	}
  	if params.Cursor != "" {
  		values.Add("cursor", params.Cursor)
  	}
  	if params.Limit != 0 {
  		values.Add("limit", strconv.Itoa(params.Limit))
  	}
  	response := struct {
  		Members          []string         `json:"members"`
  		ResponseMetaData responseMetaData `json:"response_metadata"`
  		SlackResponse
  	}{}
  	err := api.postMethod(ctx, "conversations.members", values, &response)
  	if err != nil {
  		return nil, "", err
  	}
  
  	if err := response.Err(); err != nil {
  		return nil, "", err
  	}
  
  	return response.Members, response.ResponseMetaData.NextCursor, nil
  }
docs: // GetUsersInConversationContext returns the list of users in a conversation with a custom context