extend type RootMutation {
  """**BETA** Update an existing `Main Font Family` of a `Guideline`."""
  updateGuidelineDesignSettingsMainFontFamily(
    """
    **BETA** `UpdateGuidelineDesignSettingsMainFontFamilyInputType` input argument.
    """
    input: UpdateGuidelineDesignSettingsMainFontFamilyInput!
  ): UpdateGuidelineDesignSettingsMainFontFamily
}