`concord_ds_set_object_nil'.
unsigned char* concord_ds_location (CONCORD_DS ds);
int
unsigned char* concord_ds_location (CONCORD_DS ds);
int
-concord_ds_set_object_nil (CONCORD_DS ds, CONCORD_Object object_nil);
+concord_ds_set_object_failure (CONCORD_DS ds, CONCORD_Object object_nil);
int
concord_ds_set_read_object_function (CONCORD_DS ds,
CONCORD_Object (*read_object)
int
concord_ds_set_read_object_function (CONCORD_DS ds,
CONCORD_Object (*read_object)