code: func NewFIFSRegistrarTransactor(address common.Address, transactor bind.ContractTransactor) (*FIFSRegistrarTransactor, error) {
  	contract, err := bindFIFSRegistrar(address, nil, transactor, nil)
  	if err != nil {
  		return nil, err
  	}
  	return &FIFSRegistrarTransactor{contract: contract}, nil
  }
docs: // NewFIFSRegistrarTransactor creates a new write-only instance of FIFSRegistrar, bound to a specific deployed contract.