If true, the GrafanaDashboard will be created if it does not already exist, identified by slug. If false, an error will be returned if the GrafanaDashboard does not already exist.

If true, validates the specified configuration without creating or updating the GrafanaDashboard. If the specified configuration is valid, the endpoint returns a partial response without the GrafanaDashboard. If the specified configuration is invalid, the endpoint returns an error.