def update_item_state(item_id, state)
      state = ( state ? 'complete' : 'incomplete' ) unless state.is_a?(String)
      client.put(
          "/cards/#{card_id}/checkItem/#{item_id}",
          state: state
      )
    end
def update_item_state(item_id, state)
      state = ( state ? 'complete' : 'incomplete' ) unless state.is_a?(String)
      client.put(
          "/cards/#{card_id}/checkItem/#{item_id}",
          state: state
      )
    end
Update a checklist item's state, e.g.: "complete" or "incomplete"