Pooling model results from multiply imputed dataframes

[sccollitt]

Hi Prof. Long,
I'm looking to pool dpm results from many multiply imputed datasets. I have created a list of type "S4(dpm;;dpm)" objects using the lapply function in conjunction with the dpm call. The issue is that I cannot use summary(pool("list of S4 objects")) like I normally can with a list of lavaan outputs. When I use mice::pool on the list of dpm model outputs, I receive the error:

"Error: $ operator not defined for this S4 class"

Do you know how I might go about pooling my results using Rubins rules with a list of dpm model outputs?
By the way, thanks again for this excellent package. It's saved me from many opportunities to introduce human errors using lavaan syntax.

Sam