func (_Eth2Deposit *Eth2DepositCaller) DrainAddress(opts *bind.CallOpts) (common.Address, error) {
	var out []interface{}
	err := _Eth2Deposit.contract.Call(opts, &out, "drain_address")
	if err != nil {
		return *new(common.Address), err
	}
	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
	return out0, err
}
DrainAddress is a free data retrieval call binding the contract method 0x8ba35cdf.

Solidity: function drain_address() returns(address out)
package contracts
import (
	"math/big"
	"strings"
	ethereum "github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/accounts/abi/bind"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/event"
)
var (
	_ = big.NewInt
	_ = strings.NewReader
	_ = ethereum.NotFound
	_ = bind.Bind
	_ = common.Big1
	_ = types.BloomLookup
	_ = event.NewSubscription
)
const Eth2DepositABI = "[{\"name\":\"DepositEvent\",\"inputs\":[{\"type\":\"bytes\",\"name\":\"pubkey\",\"indexed\":false},{\"type\":\"bytes\",\"name\":\"withdrawal_credentials\",\"indexed\":false},{\"type\":\"bytes\",\"name\":\"amount\",\"indexed\":false},{\"type\":\"bytes\",\"name\":\"signature\",\"indexed\":false},{\"type\":\"bytes\",\"name\":\"index\",\"indexed\":false}],\"anonymous\":false,\"type\":\"event\"},{\"outputs\":[],\"inputs\":[{\"type\":\"address\",\"name\":\"_drain_address\"}],\"constant\":false,\"payable\":false,\"type\":\"constructor\"},{\"name\":\"get_deposit_root\",\"outputs\":[{\"type\":\"bytes32\",\"name\":\"out\"}],\"inputs\":[],\"constant\":true,\"payable\":false,\"type\":\"function\",\"gas\":95389},{\"name\":\"get_deposit_count\",\"outputs\":[{\"type\":\"bytes\",\"name\":\"out\"}],\"inputs\":[],\"constant\":true,\"payable\":false,\"type\":\"function\",\"gas\":17683},{\"name\":\"deposit\",\"outputs\":[],\"inputs\":[{\"type\":\"bytes\",\"name\":\"pubkey\"},{\"type\":\"bytes\",\"name\":\"withdrawal_credentials\"},{\"type\":\"bytes\",\"name\":\"signature\"},{\"type\":\"bytes32\",\"name\":\"deposit_data_root\"}],\"constant\":false,\"payable\":true,\"type\":\"function\",\"gas\":1754607},{\"name\":\"drain\",\"outputs\":[],\"inputs\":[],\"constant\":false,\"payable\":false,\"type\":\"function\",\"gas\":35793},{\"name\":\"drain_address\",\"outputs\":[{\"type\":\"address\",\"name\":\"out\"}],\"inputs\":[],\"constant\":true,\"payable\":false,\"type\":\"function\",\"gas\":663}]"
type Eth2Deposit struct {
	Eth2DepositCaller      
	Eth2DepositTransactor  
	Eth2DepositFilterer    
}
type Eth2DepositCaller struct {
	contract *bind.BoundContract  
}
type Eth2DepositTransactor struct {
	contract *bind.BoundContract  
}
type Eth2DepositFilterer struct {
	contract *bind.BoundContract  
}
type Eth2DepositSession struct {
	Contract     *Eth2Deposit       
	CallOpts     bind.CallOpts      
	TransactOpts bind.TransactOpts  
}
type Eth2DepositCallerSession struct {
	Contract *Eth2DepositCaller  
	CallOpts bind.CallOpts       
}
type Eth2DepositTransactorSession struct {
	Contract     *Eth2DepositTransactor  
	TransactOpts bind.TransactOpts       
}
type Eth2DepositRaw struct {
	Contract *Eth2Deposit  
}
type Eth2DepositCallerRaw struct {
	Contract *Eth2DepositCaller  
}
type Eth2DepositTransactorRaw struct {
	Contract *Eth2DepositTransactor  
}
func NewEth2Deposit(address common.Address, backend bind.ContractBackend) (*Eth2Deposit, error) {
	contract, err := bindEth2Deposit(address, backend, backend, backend)
	if err != nil {
		return nil, err
	}
	return &Eth2Deposit{Eth2DepositCaller: Eth2DepositCaller{contract: contract}, Eth2DepositTransactor: Eth2DepositTransactor{contract: contract}, Eth2DepositFilterer: Eth2DepositFilterer{contract: contract}}, nil
}
func NewEth2DepositCaller(address common.Address, caller bind.ContractCaller) (*Eth2DepositCaller, error) {
	contract, err := bindEth2Deposit(address, caller, nil, nil)
	if err != nil {
		return nil, err
	}
	return &Eth2DepositCaller{contract: contract}, nil
}
func NewEth2DepositTransactor(address common.Address, transactor bind.ContractTransactor) (*Eth2DepositTransactor, error) {
	contract, err := bindEth2Deposit(address, nil, transactor, nil)
	if err != nil {
		return nil, err
	}
	return &Eth2DepositTransactor{contract: contract}, nil
}
func NewEth2DepositFilterer(address common.Address, filterer bind.ContractFilterer) (*Eth2DepositFilterer, error) {
	contract, err := bindEth2Deposit(address, nil, nil, filterer)
	if err != nil {
		return nil, err
	}
	return &Eth2DepositFilterer{contract: contract}, nil
}
func bindEth2Deposit(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
	parsed, err := abi.JSON(strings.NewReader(Eth2DepositABI))
	if err != nil {
		return nil, err
	}
	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
}
func (_Eth2Deposit *Eth2DepositRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
	return _Eth2Deposit.Contract.Eth2DepositCaller.contract.Call(opts, result, method, params...)
}
func (_Eth2Deposit *Eth2DepositRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _Eth2Deposit.Contract.Eth2DepositTransactor.contract.Transfer(opts)
}
func (_Eth2Deposit *Eth2DepositRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
	return _Eth2Deposit.Contract.Eth2DepositTransactor.contract.Transact(opts, method, params...)
}
func (_Eth2Deposit *Eth2DepositCallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
	return _Eth2Deposit.Contract.contract.Call(opts, result, method, params...)
}
func (_Eth2Deposit *Eth2DepositTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _Eth2Deposit.Contract.contract.Transfer(opts)
}
func (_Eth2Deposit *Eth2DepositTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
	return _Eth2Deposit.Contract.contract.Transact(opts, method, params...)
}