Extract the SizeIndex field from a header byte.
- headerByte (Byte)
[Missing <param name="headerByte"/> documentation for "M:InTheHand.Net.Bluetooth.ServiceRecordParser.GetSizeIndex(System.Byte)"]
[Missing <returns> documentation for "M:InTheHand.Net.Bluetooth.ServiceRecordParser.GetSizeIndex(System.Byte)"]