easyscience.fitting.multi_fitter.MultiFitter.__init__ wraps its fit objects in the deprecated CollectionBase, so every multi-object fit throws deprecation warnings even though the calling code (e.g. easyreflectometry) has already migrated off CollectionBase entirely.
MultiFitter should use EasyList (or another non-deprecated container) instead, so downstream consumers stop seeing this warning on ordinary fits.
easyscience.fitting.multi_fitter.MultiFitter.__init__wraps its fit objects in the deprecated CollectionBase, so every multi-object fit throws deprecation warnings even though the calling code (e.g. easyreflectometry) has already migrated off CollectionBase entirely.MultiFitter should use EasyList (or another non-deprecated container) instead, so downstream consumers stop seeing this warning on ordinary fits.