Configuration for properties to synchronize with a [MultiplayerSynchronizer]. Adds the property identified by the given [param path] to the list of the properties being synchronized, optionally passing an [param index]. Returns a list of synchronized property [NodePath]s. Returns whether the given [param path] is configured for synchronization. Finds the index of the given [param path]. Returns whether the property identified by the given [param path] is configured to be synchronized on spawn. Returns whether the property identified by the given [param path] is configured to be synchronized on process. Sets whether the property identified by the given [param path] is configured to be synchronized on spawn. Sets whether the property identified by the given [param path] is configured to be synchronized on process. Removes the property identified by the given [param path] from the configuration.