An abstraction of a serialized scene. A simplified interface to a scene file. Provides access to operations and checks that can be performed on the scene resource itself. TODO: explain ownership, and that node does not need to own itself Returns [code]true[/code] if the scene file has nodes. Returns the [code]SceneState[/code] representing the scene file contents. Instantiates the scene's node hierarchy. Triggers child scene instantiation(s). Triggers the [enum Object.NOTIFICATION_INSTANCED] notification on the root node. Pack will ignore any sub-nodes not owned by given node. See [method Node.set_owner]. A dictionary representation of the scene contents. Available keys include "rnames" and "variants" for resources, "node_count", "nodes", "node_paths" for nodes, "editable_instances" for base scene children overrides, "conn_count" and "conns" for signal connections, and "version" for the format style of the PackedScene. If passed to [method instance], blocks edits to the scene state. If passed to [method instance], provides local scene resources to the local scene. Requires tools compiled. If passed to [method instance], provides local scene resources to the local scene. Only the main scene should receive the main edit state. Requires tools compiled.