Add a categorie with attributes

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I know the function "/nodes/{id}/categories" to add a categorie. But, how can I add a categorie to an object AND set some attributes at the same time? I'm asking this because I'm trying to add a categorie that contains required fileds. There is no "attribute_key" that can be passed as parameter like in an update Ex: {"1234_4": "blablabla"}.

Regards.

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