    function verifyAndProcessWithdrawal(
        BeaconChainProofs.WithdrawalProofs calldata withdrawalProofs, 
        bytes calldata validatorFieldsProof,
        bytes32[] calldata validatorFields,
        bytes32[] calldata withdrawalFields,
        uint256 beaconChainETHStrategyIndex,
        uint64 oracleBlockNumber
    )
...
        // reference: uint64 withdrawableEpoch = Endian.fromLittleEndianUint64(validatorFields[BeaconChainProofs.VALIDATOR_WITHDRAWABLE_EPOCH_INDEX]);
        if (Endian.fromLittleEndianUint64(validatorFields[BeaconChainProofs.VALIDATOR_WITHDRAWABLE_EPOCH_INDEX]) <= slot/BeaconChainProofs.SLOTS_PER_EPOCH) {
            _processFullWithdrawal(withdrawalAmountGwei, validatorIndex, beaconChainETHStrategyIndex, podOwner, validatorStatus[validatorIndex]);
        } else {
            _processPartialWithdrawal(slot, withdrawalAmountGwei, validatorIndex, podOwner);
        }
    }
