Id_token modifier custom header

Is it possible to specify a custom header for the id_token modifier? So we get:

X-Auth: token

instead of

Authorization: Bearer token

The solution was to use the id_token mutator together with the header mutator.

mutators: 
  header: 
    enabled: true
    config:
      headers: 
        X-Auth: '{{index .Header "Authorization" 0 | trimPrefix "Bearer "}}'
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