new_var->data.centroid = iface_t->fields.structure[i].centroid;
new_var->data.sample = iface_t->fields.structure[i].sample;
new_var->data.patch = iface_t->fields.structure[i].patch;
+ new_var->data.stream = var->data.stream;
+ new_var->data.how_declared = var->data.how_declared;
new_var->init_interface_type(iface_t);
hash_table_insert(interface_namespace, new_var,