How to add query parameters in domain?

[smn-snkl]

I saw that you can add a special query param like this:

add_documentation({'paths': {'/status': {'get': {'parameters': [
    {
        'in': 'query',
        'name': 'foobar',
        'required': False,
        'description': 'special query parameter',
        'type': 'string'
    }]
}}}})

But I'm wondering if I'm missing how to define parameters in the DOMAIN dict. Shouldn't there be a way to add them right there?

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