Method getPosition

src/jrd/recsrc/WindowedStream.cpp:85–89

		}

		FB_UINT64 getPosition(Request* request) const override
		{
			Impure* const impure = request->getImpure<Impure>(m_impure);
			return impure->irsb_position;
		}

	public:
		NestConst<BufferedStream> m_next;