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How do I tell Twig not to print any form field?

I am trying to theme a form in Drupal 8.

This is the template that I am using which is basically from form.html.twig

<form{{ attributes }}> {{ element.app_theme_settings }} {{ element.a2 }} {{ element.a3 }}   {% print remaining required form fields. %}  {{ children }} </form>

My problem is I want to print children variable but without app_theme_settings, a2 and a3 children. In Drupal 7 we could use unset function, but in twig I am not sure what to use. I know I can use without filter, but it does not accept the array argument so I have to write name of each element already printed.

 {{ children|without('app_theme_settings','a2','a3' }}

How can I print children without specifying the name of each field one by one?

This article was republished from its original source.
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How do I tell Twig not to print any form field?

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