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Replace JSONArray with new elements in a JSONObject in Jackson without iterating

on

I'm using Jackson to serialize data. I need to replace all elements of a JSONArray within a JSONObject without iterating through the array. How can I do this?

I'm using this at the moment

JsonNode parentNode = formNode.findParent("form");
((ObjectNode) parentNode).replace("form" , jsonNode);

But it does not remove the older elements just adds the new ones.

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