number ret = bindings.COption_FilterZ_some(o == null ? 0 : o.ptr);
Option_FilterZ ret_hu_conv = Option_FilterZ.constr_from_ptr(ret);
ret_hu_conv.ptrs_to.add(ret_hu_conv);
number ret = bindings.COption_FilterZ_some(o == null ? 0 : o.ptr);
Option_FilterZ ret_hu_conv = Option_FilterZ.constr_from_ptr(ret);
ret_hu_conv.ptrs_to.add(ret_hu_conv);