readAttributeCapacity(completionHandler:)
Declaration
func readAttributeCapacity(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeCapacity() async throws -> NSNumberfunc readAttributeCapacity(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeCapacity() async throws -> NSNumber