Writes an entire transaction to the output.
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
Use the WriteTransaction method when you have generated a complete transaction outside of the class and want to include it in the document being created by this instance.
No validation is done on the contents of the Value parameter. You must ensure the transaction data is valid and matches the same conventions (delimiters, etc) being used in this document.