Handle for a Resource’s unique ID.
The RID type is used to access the unique integer ID of a resource. They are opaque, which means they do not grant access to the associated resource by themselves. They are used by and with the low-level Server classes such as VisualServer.
Creates a new RID instance with the ID of a given resource. When not handed a valid resource, silently stores the unused ID 0.
Returns the ID of the referenced resource.
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