Sybian wired remote control. Flexible moulded attachments are supplied which fit over the vibrating ridge and shaft which mostly have integrated dildos on their top. In use, the rider locates the dildo into their body cavity for internal stimulation while pressing their external erogenous parts on the vibrating ridge. According to its inventor Dave Lampert, the Sybian was first conceived in the 1970s, and developed in 1983. A prototype was built in 1985 from sheet metal mounted on a wooden frame with a vibrator projecting through an opening inside the housing; a second prototype became the basis for current production models.
Is-a and type(type(a)) is a metatype. While as distributed all types have the same metatype (PyType_Type, which is also its own metatype), this is not a requirement. The type of classic classes, known as types.ClassType, can also be considered a distinct metatype. In Java, is-a relation between the type parameters of one class or interface and the type parameters of another are determined by the extends and implements clauses. Using the Collections classes, ArrayList<E> implements List<E>, and List<E> extends Collection<E>. So ArrayList<String> is a subtype of List<String>, which is a subtype of Collection<String>. The subtyping relationship is preserved between the types