proc isNil(self: IntObject): bool {.inline, ...raises: [], tags: [], forbids: [].}

proc newInt(i: Digit): IntObject {....raises: [], tags: [], forbids: [].}

proc newInt(o: IntObject): IntObject {....raises: [], tags: [], forbids: [].}

proc newInt[I: SomeSignedInt](i: I): IntObject

proc newInt[I: SomeUnsignedInt and not Digit](i: I): IntObject

proc newIntFromPtr(p: pointer): IntObject {....raises: [], tags: [], forbids: [].}

proc newIntFromPtr[I: ref | ptr](i: I): IntObject

proc newIntSimple(): IntObject {....raises: [], tags: [], forbids: [].}