g.command 'history' do |c|
          c.flag 'channel', desc: 'Conversation ID to fetch history for.'
          c.flag 'cursor', desc: "Paginate through collections of data by setting the cursor parameter to a next_cursor attribute returned by a previous request's response_metadata. Default value fetches the first 'page' of the collection. See pagination for more detail."
          c.flag 'include_all_metadata', desc: 'Return all metadata associated with this message.'
          c.flag 'inclusive', desc: 'Include messages with oldest or latest timestamps in results. Ignored unless either timestamp is specified.'