code: func (mcs *ConsenterSupport) CreateNextBlock(data []*cb.Envelope) *cb.Block {
  	block := cb.NewBlock(0, nil)
  	mtxs := make([][]byte, len(data))
  	for i := range data {
  		mtxs[i] = utils.MarshalOrPanic(data[i])
  	}
  	block.Data = &cb.BlockData{Data: mtxs}
  	mcs.NextBlockVal = block
  	return block
  }
docs: // CreateNextBlock creates a simple block structure with the given data