DF_get_class_index 533 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 553 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 604 modules/qc/query_command.c               type = DF_get_class_index(index);