GimpUi.IntStore:user-data-type

"user-data-type"             GType                : Read / Write / Construct Only
  

Sets the GLib.Type for the GIMP_INT_STORE_USER_DATA column.

You need to set this property when constructing the store if you want to use the GIMP_INT_STORE_USER_DATA column and want to have the store handle ref-counting of your user data.

Since 2.4