[DllImport("abci")] public static extern Bool aiPolyMeshGetNextSubmesh(aiSample sample, ref aiSubmeshSummary smi);
[DllImport("abci")] public static extern void aiPolyMeshFillSubmeshIndices(aiSample sample, ref aiSubmeshSummary smi, ref aiSubmeshData data);
[DllImport("AlembicImporter")] public static extern bool aiPolyMeshGetNextSubmesh(aiSample sample, ref aiSubmeshSummary smi);