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Authorization Policy Each entry in the tree is a watcher or a list of watchers Each attribute specifies a permission Can they subscribe What attributes will they see “Inversion” of a black/white list Requires a well specified set of processing logic as part of dataset class Benefits of this model Allows for inheritance to work Avoids the needs for scripts (described previously in requirements document) Enables capabilities discovery Allows for operator defined permissions and user defined permissions I.e., “friend” |