Imports
- github.com/ethereum/go-ethereum/common/hexutil
- github.com/ethereum/go-ethereum/contracts/chequebook/contract
- github.com/ethereum/go-ethereum/core/types
- github.com/ethereum/go-ethereum/crypto
- github.com/ethereum/go-ethereum/log
- github.com/ethereum/go-ethereum/accounts/abi/bind
- github.com/ethereum/go-ethereum/swarm/services/swap/swap
- github.com/ethereum/go-ethereum/common