Mesh.IsSceneCached Property

Indicates that this mesh is cashed by Scene objects and cannot be disposed by calling Dispose method. This means the mesh can be shared without worrying that someone will dispose the mesh. This flag is set when the mesh is cached by calling Scene.CacheObject(String, Object) method. The mesh will be disposed when the Scene will be disposed or if it is removed from the cache and then disposed.

public bool IsSceneCached { get; }