var->warn_extension = this->warn_extension;
var->origin_upper_left = this->origin_upper_left;
var->pixel_center_integer = this->pixel_center_integer;
var->warn_extension = this->warn_extension;
var->origin_upper_left = this->origin_upper_left;
var->pixel_center_integer = this->pixel_center_integer;
if (this->constant_value)
var->constant_value = this->constant_value->clone(mem_ctx, ht);
if (this->constant_value)
var->constant_value = this->constant_value->clone(mem_ctx, ht);