Function create_layer_set 

pub fn create_layer_set(
    tx: &mut Transaction,
    model: &Model,
    draft: LayerSetDraft<'_>,
) -> MaterialResult<EntityId>

Stage a non-empty ordered layer set. Layers may have been created earlier in this transaction; their staged type is checked just like stored records.

Errors

Refuses an empty layer list, a member that is not a layer of the model’s release, and a description for IFC2X3.