require(customAttributes[j][0] < _fighterFarmInstance.numElements(generation), "MergingPool: element out of bounds");
require(customAttributes[j][1] >= 65 && customAttributes[j][1] <= 95, "MergingPool: weight out of bounds");
for (uint32 j = 0; j < winnersLength; j++) {
    require(customAttributes[j][0] < _fighterFarmInstance.numElements(generation), "MergingPool: element out of bounds");
    require(customAttributes[j][1] >= 65 && customAttributes[j][1] <= 95, "MergingPool: weight out of bounds");
    if (msg.sender == winnerAddresses[currentRound][j]) {
        _fighterFarmInstance.mintFromMergingPool(
            msg.sender,
            modelURIs[claimIndex],
            modelTypes[claimIndex],
            customAttributes[claimIndex]
        );
        claimIndex += 1;
    }
}
for (uint32 j = 0; j < winnersLength; j++) {
    if (msg.sender == winnerAddresses[currentRound][j]) {
        require(customAttributes[claimIndex][0] < _fighterFarmInstance.numElements(generation), "MergingPool: element out of bounds");
        require(customAttributes[claimIndex][1] >= 65 && customAttributes[claimIndex][1] <= 95, "MergingPool: weight out of bounds");
        _fighterFarmInstance.mintFromMergingPool(
            msg.sender,
            modelURIs[claimIndex],
            modelTypes[claimIndex],
            customAttributes[claimIndex]
        );
        claimIndex += 1;
    }
}
