unity – How can I call Schedule() on interface that inherits from IJob

So I have a voxel terrain engine, and I have an interface that all meshing jobs should inherit from. That looks like this (simplified from the actual):

public interface IMesherJob : IJob
{
    VoxelDataVolume<byte> VoxelData { get; set; }

    NativeArray<MeshingVertexData> OutputVertices { get; set; }
    NativeArray<ushort> OutputTriangles { get; set; }
}

One example of a meshing job is marching cubes, which looks like this: public struct MarchingCubesJob : IMesherJob

So here’s my question: If I have a reference to an IMesherJob, can I somehow call Schedule on it? If I have a reference to MarchingCubesJob, I can call Schedule on it:

This works:

MarchingCubesJob myMeshingJob = GetMeshingJob();
JobHandle handle = myMeshingJob.Schedule(voxelCount, 64)

But this does not work:

IMesherJob myMeshingJob = GetMeshingJob();
JobHandle handle = myMeshingJob.Schedule(voxelCount, 64);

I noticed that Schedule() is an extension method for T where T : struct, IJob so that might be interfering with it, but it should still work because IMesherJob inherits from IJob