code: func NewGetTxOutProofCmd(txIDs []string, blockHash *string) *GetTxOutProofCmd {
  	return &GetTxOutProofCmd{
  		TxIDs:     txIDs,
  		BlockHash: blockHash,
  	}
  }
docs: // NewGetTxOutProofCmd returns a new instance which can be used to issue a
  // gettxoutproof JSON-RPC command.
  //
  // The parameters which are pointers indicate they are optional.  Passing nil
  // for optional parameters will use the default value.