DF_get_class_index 524 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 543 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 592 modules/qc/query_command.c               type = DF_get_class_index(index);