DF_get_class_index 545 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 565 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 616 modules/qc/query_command.c               type = DF_get_class_index(index);