Account for empty arrays and dictionaries.
Account for empty arrays and dictionaries.

EuropeanSpallationSource/openxal,luxiaohan/openxal-csns-luxh,openxal/openxal,luxiaohan/openxal-csns-luxh,openxal/openxal,EuropeanSpallationSource/openxal,EuropeanSpallationSource/openxal,EuropeanSpallationSource/openxal,openxal/openxal,luxiaohan/openxal-csns-luxh,openxal/openxal,luxiaohan/openxal-csns-luxh,EuropeanSpallationSource/openxal,openxal/openxal