DF_get_class_index 522 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 541 modules/qc/query_command.c               type = DF_get_class_index(index);
DF_get_class_index 590 modules/qc/query_command.c               type = DF_get_class_index(index);