number ret = bindings.COption_u64Z_clone(this.ptr);
Option_u64Z ret_hu_conv = Option_u64Z.constr_from_ptr(ret);
ret_hu_conv.ptrs_to.add(this);
number ret = bindings.COption_u64Z_clone(this.ptr);
Option_u64Z ret_hu_conv = Option_u64Z.constr_from_ptr(ret);
ret_hu_conv.ptrs_to.add(this);