/// <summary>
/// Return the beacon committee at ``slot`` for ``index``.
/// </summary>
public IReadOnlyList <ValidatorIndex> GetBeaconCommittee(BeaconState state, Slot slot, CommitteeIndex index)
{
Epoch epoch = _beaconChainUtility.ComputeEpochAtSlot(slot);
ulong committeesPerSlot = GetCommitteeCountAtSlot(state, slot);
IList <ValidatorIndex> indices = GetActiveValidatorIndices(state, epoch);
Bytes32 seed = GetSeed(state, epoch, _signatureDomainOptions.CurrentValue.BeaconAttester);
ulong committeeIndex = (slot % _timeParameterOptions.CurrentValue.SlotsPerEpoch) * committeesPerSlot + (ulong)index;
ulong committeeCount = committeesPerSlot * _timeParameterOptions.CurrentValue.SlotsPerEpoch;
IReadOnlyList <ValidatorIndex> committee = _beaconChainUtility.ComputeCommittee(indices, seed, committeeIndex, committeeCount);
return(committee);
}