code: func (n *Node) GetEthereumClient() (client *EthereumClient, _ error) {
  	rpc, err := n.node.Attach()
  	if err != nil {
  		return nil, err
  	}
  	return &EthereumClient{ethclient.NewClient(rpc)}, nil
  }
docs: // GetEthereumClient retrieves a client to access the Ethereum subsystem.