g.command 'invite' do |c|
          c.flag 'channel_ids', desc: 'A comma-separated list of channel_ids for this user to join. At least one channel is required.'
          c.flag 'email', desc: 'The email address of the person to invite.'
          c.flag 'team_id', desc: 'The ID (T1234) of the workspace.'
          c.flag 'custom_message', desc: 'An optional message to send to the user in the invite email.'