Updates the properties of an existing GuidelinePageSection.
All mutations have exactly one input field called input with a unique input and return type. This is useful to write mutations with variables, so there is always one single variable per mutation. This makes it easier to use and reuse them.
The id of the GuidelinePageSection that should be updated.
The properties of the section that should be updated.
The language in which the GuidelinePageSection should be updated. Is only respected when using a translatable field, like f.e. label.
The Section that was modified.