Get the raw byte array from which the record was parsed.
Declaration Syntax Return Value
An array of Byte, or nullNothingnullptr if
the record was not created by parsing a raw record.
Remarks
A Service Record can be created either by manually building new
ServiceAttributes holding new
ServiceElements, or it can be created
by ServiceRecordParser parsing an array
of bytes read from another machine by e.g.
GetServiceRecords.
In that case this method returns that source byte array.
Note a separate class will be provided in the future to build the record
byte array from a built record structure.