Iterator of set bit indices that reinterprets the indices as the specified enum

SetBitIndicesIterator.cs

using System.Collections;
using System.Diagnostics;
using System.Numerics;
using System.Runtime.CompilerServices;

// Enumerates the bits from highest to lowest
public struct SetBitIndicesIterator<T> : IEnumerator<T>
    where T : struct, Enum
{
    static SetBitIndicesIterator() =>
        Debug.Assert(Enum.GetUnderlyingType(typeof(T)) == typeof(int));

    private uint _bits;
    private int _current;

    public SetBitIndicesIterator(uint bits)
    {
        _bits = bits;
        _current = default;
    }

    public bool MoveNext()
    {
        if (_bits == 0)
            return false;
        _current = (sizeof(uint) * 8) - BitOperations.LeadingZeroCount(_bits) - 1;
        _bits &= ~(1u << _current);
        return true;
    }

    public readonly T Current
    {
        get
        {
            var c = _current;
            return Unsafe.As<int, T>(ref c);
        }
    }
    object IEnumerator.Current => Current;

    public void Reset()
    {
        throw new NotImplementedException();
    }

    public void Dispose()
    {
    }
}